diff --git a/docs/i2c_driver.md b/docs/i2c_driver.md
index 2457e8e7b9..868715a62c 100644
--- a/docs/i2c_driver.md
+++ b/docs/i2c_driver.md
@@ -138,23 +138,6 @@ void i2c_init(void) {
---
-### `i2c_status_t i2c_start(uint8_t address, uint16_t timeout)` :id=api-i2c-start
-
-Start an I2C transaction.
-
-#### Arguments :id=api-i2c-start-arguments
-
- - `uint8_t address`
- The 7-bit I2C address of the device (ie. without the read/write bit - this will be set automatically).
- - `uint16_t timeout`
- The time in milliseconds to wait for a response from the target device.
-
-#### Return Value :id=api-i2c-start-return
-
-`I2C_STATUS_TIMEOUT` if the timeout period elapses, `I2C_STATUS_ERROR` if some other error occurs, otherwise `I2C_STATUS_SUCCESS`.
-
----
-
### `i2c_status_t i2c_transmit(uint8_t address, uint8_t *data, uint16_t length, uint16_t timeout)` :id=api-i2c-transmit
Send multiple bytes to the selected I2C device.
@@ -285,6 +268,21 @@ Reads from a register with a 16-bit address (big endian) on the I2C device.
---
-### `i2c_status_t i2c_stop(void)` :id=api-i2c-stop
+### `i2c_status_t i2c_ping_address(uint8_t address, uint16_t timeout)` :id=api-i2c-ping-address
-Stop the current I2C transaction.
+Pings the I2C bus for a specific address.
+
+On ChibiOS a "best effort" attempt is made by reading a single byte from register 0 at the requested address. This should generally work except for I2C devices that do not not respond to a register 0 read request, which will result in a false negative result (unsucessful response to ping attempt).
+
+This function is weakly defined, meaning it can be overridden if necessary for your particular use case:
+
+#### Arguments
+
+ - `uint8_t address`
+ The 7-bit I2C address of the device (ie. without the read/write bit - this will be set automatically).
+ - `uint16_t timeout`
+ The time in milliseconds to wait for a response from the target device.
+
+#### Return Value
+
+`I2C_STATUS_TIMEOUT` if the timeout period elapses, `I2C_STATUS_ERROR` if some other error occurs, otherwise `I2C_STATUS_SUCCESS`.
diff --git a/docs/ja/i2c_driver.md b/docs/ja/i2c_driver.md
index 1d8f70e163..92c4185370 100644
--- a/docs/ja/i2c_driver.md
+++ b/docs/ja/i2c_driver.md
@@ -23,12 +23,11 @@ I2C アドレスと他の技術詳細について、さらなる情報を得る
| 関数 | 説明 |
|-------------------------------------------------------------------------------------------------------------|-------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
| `void i2c_init(void);` | I2C ドライバを初期化します。他のあらゆるトランザクションを開始する前に、この関数を一度だけ呼ぶ必要があります。 |
-| `i2c_status_t i2c_start(uint8_t address, uint16_t timeout);` | I2C トランザクションを開始します。アドレスは方向ビットのない7ビットスレーブアドレスです。 |
| `i2c_status_t i2c_transmit(uint8_t address, uint8_t* data, uint16_t length, uint16_t timeout);` | I2C 経由でデータを送信します。アドレスは方向ビットのない7ビットスレーブアドレスです。トランザクションのステータスを返します。 |
| `i2c_status_t i2c_receive(uint8_t address, uint8_t* data, uint16_t length, uint16_t timeout);` | I2C 経由でデータを受信します。アドレスは方向ビットのない7ビットスレーブアドレスです。 `length` で指定した長さのバイト列を `data` に保存し、トランザクションのステータスを返します。 |
| `i2c_status_t i2c_writeReg(uint8_t devaddr, uint8_t regaddr, uint8_t* data, uint16_t length, uint16_t timeout);` | `i2c_transmit` と同様ですが、 `regaddr` でスレーブのデータ書き込み先のレジスタを指定します。 |
| `i2c_status_t i2c_readReg(uint8_t devaddr, uint8_t regaddr, uint8_t* data, uint16_t length, uint16_t timeout);` | `i2c_receive` と同様ですが、 `regaddr` でスレーブのデータ読み込み先のレジスタを指定します。 |
-| `i2c_status_t i2c_stop(void);` | I2C トランザクションを終了します。 |
+| `i2c_status_t i2c_ping_address(uint8_t address, uint16_t timeout);` | I2C アドレスをテストします。アドレスは方向ビットのない7ビットスレーブアドレスです。 |
### 関数の戻り値 :id=function-return
diff --git a/drivers/gpio/pca9505.c b/drivers/gpio/pca9505.c
index 4a11724ecf..5617a14a8b 100644
--- a/drivers/gpio/pca9505.c
+++ b/drivers/gpio/pca9505.c
@@ -41,8 +41,6 @@ void pca9505_init(uint8_t slave_addr) {
}
// TODO: could check device connected
- // i2c_start(SLAVE_TO_ADDR(slave) | I2C_WRITE);
- // i2c_stop();
}
bool pca9505_set_config(uint8_t slave_addr, pca9505_port_t port, uint8_t conf) {
diff --git a/drivers/gpio/pca9555.c b/drivers/gpio/pca9555.c
index 23727d21b3..0fc30099ac 100644
--- a/drivers/gpio/pca9555.c
+++ b/drivers/gpio/pca9555.c
@@ -29,8 +29,6 @@ void pca9555_init(uint8_t slave_addr) {
}
// TODO: could check device connected
- // i2c_start(SLAVE_TO_ADDR(slave) | I2C_WRITE);
- // i2c_stop();
}
bool pca9555_set_config(uint8_t slave_addr, pca9555_port_t port, uint8_t conf) {
diff --git a/drivers/oled/oled_driver.c b/drivers/oled/oled_driver.c
index c674675d11..8cca41394f 100644
--- a/drivers/oled/oled_driver.c
+++ b/drivers/oled/oled_driver.c
@@ -223,13 +223,8 @@ __attribute__((weak)) bool oled_send_cmd_P(const uint8_t *data, uint16_t size) {
spi_stop();
return (status >= 0);
# elif defined(OLED_TRANSPORT_I2C)
- i2c_status_t status = i2c_start((OLED_DISPLAY_ADDRESS << 1) | I2C_WRITE, OLED_I2C_TIMEOUT);
- for (uint16_t i = 0; i < size && status >= 0; i++) {
- status = i2c_write(pgm_read_byte((const char *)data++), OLED_I2C_TIMEOUT);
- }
-
- i2c_stop();
+ i2c_status_t status = i2c_transmit_P((OLED_DISPLAY_ADDRESS << 1), data, size, OLED_I2C_TIMEOUT);
return (status == I2C_STATUS_SUCCESS);
# endif
diff --git a/drivers/painter/comms/qp_comms_i2c.c b/drivers/painter/comms/qp_comms_i2c.c
index ec45ddfb3b..93f503f3dd 100644
--- a/drivers/painter/comms/qp_comms_i2c.c
+++ b/drivers/painter/comms/qp_comms_i2c.c
@@ -28,18 +28,14 @@ bool qp_comms_i2c_init(painter_device_t device) {
}
bool qp_comms_i2c_start(painter_device_t device) {
- painter_driver_t * driver = (painter_driver_t *)device;
- qp_comms_i2c_config_t *comms_config = (qp_comms_i2c_config_t *)driver->comms_config;
- return i2c_start(comms_config->chip_address << 1) == I2C_STATUS_SUCCESS;
+ return true;
}
uint32_t qp_comms_i2c_send_data(painter_device_t device, const void *data, uint32_t byte_count) {
return qp_comms_i2c_send_raw(device, data, byte_count);
}
-void qp_comms_i2c_stop(painter_device_t device) {
- i2c_stop();
-}
+void qp_comms_i2c_stop(painter_device_t device) {}
////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
// Command+Data I2C support
diff --git a/drivers/sensors/cirque_pinnacle_i2c.c b/drivers/sensors/cirque_pinnacle_i2c.c
index c9b9bece5f..a3622e9d60 100644
--- a/drivers/sensors/cirque_pinnacle_i2c.c
+++ b/drivers/sensors/cirque_pinnacle_i2c.c
@@ -19,7 +19,6 @@ void RAP_ReadBytes(uint8_t address, uint8_t* data, uint8_t count) {
pd_dprintf("error cirque_pinnacle i2c_read_register\n");
touchpad_init = false;
}
- i2c_stop();
}
}
@@ -32,6 +31,5 @@ void RAP_Write(uint8_t address, uint8_t data) {
pd_dprintf("error cirque_pinnacle i2c_write_register\n");
touchpad_init = false;
}
- i2c_stop();
}
}
diff --git a/keyboards/3w6/rev2/keymaps/default_pimoroni/pimoroni_trackball.c b/keyboards/3w6/rev2/keymaps/default_pimoroni/pimoroni_trackball.c
index 35a85b5476..0db58bfabd 100644
--- a/keyboards/3w6/rev2/keymaps/default_pimoroni/pimoroni_trackball.c
+++ b/keyboards/3w6/rev2/keymaps/default_pimoroni/pimoroni_trackball.c
@@ -38,7 +38,7 @@ static uint16_t i2c_timeout_timer;
void trackball_set_rgbw(uint8_t red, uint8_t green, uint8_t blue, uint8_t white) {
uint8_t data[] = {0x00, red, green, blue, white};
- i2c_transmit(TRACKBALL_WRITE, data, sizeof(data), I2C_TIMEOUT);
+ i2c_transmit(TRACKBALL_ADDRESS, data, sizeof(data), I2C_TIMEOUT);
}
int16_t mouse_offset(uint8_t positive, uint8_t negative, int16_t scale) {
@@ -120,7 +120,7 @@ bool pointing_device_task(void) {
static uint16_t debounce_timer;
uint8_t state[5] = {};
if (timer_elapsed(i2c_timeout_timer) > I2C_WAITCHECK) {
- if (i2c_read_register(TRACKBALL_WRITE, 0x04, state, 5, I2C_TIMEOUT) == I2C_STATUS_SUCCESS) {
+ if (i2c_read_register(TRACKBALL_ADDRESS, 0x04, state, 5, I2C_TIMEOUT) == I2C_STATUS_SUCCESS) {
if (!state[4] && !debounce) {
if (scrolling) {
#ifdef PIMORONI_TRACKBALL_INVERT_X
diff --git a/keyboards/3w6/rev2/keymaps/default_pimoroni/pimoroni_trackball.h b/keyboards/3w6/rev2/keymaps/default_pimoroni/pimoroni_trackball.h
index cfcd5a47a1..ca2559bec7 100644
--- a/keyboards/3w6/rev2/keymaps/default_pimoroni/pimoroni_trackball.h
+++ b/keyboards/3w6/rev2/keymaps/default_pimoroni/pimoroni_trackball.h
@@ -20,10 +20,8 @@
#include "pointing_device.h"
#ifndef TRACKBALL_ADDRESS
-# define TRACKBALL_ADDRESS 0x0A
+# define TRACKBALL_ADDRESS (0x0A << 1)
#endif
-#define TRACKBALL_WRITE ((TRACKBALL_ADDRESS << 1) | I2C_WRITE)
-#define TRACKBALL_READ ((TRACKBALL_ADDRESS << 1) | I2C_READ)
void trackball_set_rgbw(uint8_t red, uint8_t green, uint8_t blue, uint8_t white);
void trackball_check_click(bool pressed, report_mouse_t *mouse);
diff --git a/keyboards/bajjak/bajjak.c b/keyboards/bajjak/bajjak.c
index 74e2b2aa8c..e6102e817b 100644
--- a/keyboards/bajjak/bajjak.c
+++ b/keyboards/bajjak/bajjak.c
@@ -137,23 +137,16 @@ uint8_t init_mcp23018(void) {
// - unused : input : 1
// - input : input : 1
// - driving : output : 0
- mcp23018_status = i2c_start(I2C_ADDR_WRITE, BAJJAK_EZ_I2C_TIMEOUT); if (mcp23018_status) goto out;
- mcp23018_status = i2c_write(IODIRA, BAJJAK_EZ_I2C_TIMEOUT); if (mcp23018_status) goto out;
- mcp23018_status = i2c_write(0b00000000, BAJJAK_EZ_I2C_TIMEOUT); if (mcp23018_status) goto out;
- mcp23018_status = i2c_write(0b00111111, BAJJAK_EZ_I2C_TIMEOUT); if (mcp23018_status) goto out;
- i2c_stop();
+ uint8_t data[] = {0b00000000, 0b00111111};
+ mcp23018_status = i2c_writeReg(I2C_ADDR, IODIRA, data, 2, BAJJAK_EZ_I2C_TIMEOUT);
- // set pull-up
- // - unused : on : 1
- // - input : on : 1
- // - driving : off : 0
- mcp23018_status = i2c_start(I2C_ADDR_WRITE, BAJJAK_EZ_I2C_TIMEOUT); if (mcp23018_status) goto out;
- mcp23018_status = i2c_write(GPPUA, BAJJAK_EZ_I2C_TIMEOUT); if (mcp23018_status) goto out;
- mcp23018_status = i2c_write(0b00000000, BAJJAK_EZ_I2C_TIMEOUT); if (mcp23018_status) goto out;
- mcp23018_status = i2c_write(0b01111111, BAJJAK_EZ_I2C_TIMEOUT); if (mcp23018_status) goto out;
-
-out:
- i2c_stop();
+ if (!mcp23018_status) {
+ // set pull-up
+ // - unused : on : 1
+ // - input : on : 1
+ // - driving : off : 0
+ mcp23018_status = i2c_writeReg(I2C_ADDR, IODIRA, data, 2, BAJJAK_EZ_I2C_TIMEOUT);
+ }
#ifdef LEFT_LEDS
if (!mcp23018_status) mcp23018_status = bajjak_left_leds_update();
@@ -176,21 +169,11 @@ uint8_t bajjak_left_leds_update(void) {
// - unused : hi-Z : 1
// - input : hi-Z : 1
// - driving : hi-Z : 1
- mcp23018_status = i2c_start(I2C_ADDR_WRITE, BAJJAK_EZ_I2C_TIMEOUT);
- if (mcp23018_status) goto out;
- mcp23018_status = i2c_write(OLATA, BAJJAK_EZ_I2C_TIMEOUT);
- if (mcp23018_status) goto out;
- mcp23018_status = i2c_write(0b11111111
- & ~(bajjak_left_led_1<.
#include "i2c_master.h"
// I2C aliases and register addresses (see "mcp23018.md")
-#define I2C_ADDR 0b0100000
-#define I2C_ADDR_WRITE ( (I2C_ADDR<<1) | I2C_WRITE )
-#define I2C_ADDR_READ ( (I2C_ADDR<<1) | I2C_READ )
+#define I2C_ADDR (0b0100000<<1)
#define IODIRA 0x00 // i/o direction register
#define IODIRB 0x01
#define GPPUA 0x0C // GPIO pull-up resistor register
diff --git a/keyboards/bajjak/matrix.c b/keyboards/bajjak/matrix.c
index 20fc3c8f23..424bc29e4e 100644
--- a/keyboards/bajjak/matrix.c
+++ b/keyboards/bajjak/matrix.c
@@ -145,12 +145,7 @@ static matrix_row_t read_cols(uint8_t row) {
uint8_t data = 0;
// reading GPIOB (column port) since in mcp23018's sequential mode
// it is addressed directly after writing to GPIOA in select_row()
- mcp23018_status = i2c_start(I2C_ADDR_READ, BAJJAK_EZ_I2C_TIMEOUT); if (mcp23018_status) goto out;
- mcp23018_status = i2c_read_nack(BAJJAK_EZ_I2C_TIMEOUT); if (mcp23018_status < 0) goto out;
- data = ~((uint8_t)mcp23018_status);
- mcp23018_status = I2C_STATUS_SUCCESS;
- out:
- i2c_stop();
+ mcp23018_status = i2c_receive(I2C_ADDR, &data, 1, BAJJAK_EZ_I2C_TIMEOUT);
return data;
}
} else {
@@ -195,11 +190,10 @@ static void select_row(uint8_t row) {
if (!mcp23018_status) {
// set active row low : 0
// set other rows hi-Z : 1
- mcp23018_status = i2c_start(I2C_ADDR_WRITE, BAJJAK_EZ_I2C_TIMEOUT); if (mcp23018_status) goto out;
- mcp23018_status = i2c_write(GPIOA, BAJJAK_EZ_I2C_TIMEOUT); if (mcp23018_status) goto out;
- mcp23018_status = i2c_write(0xFF & ~(1 << row), BAJJAK_EZ_I2C_TIMEOUT); if (mcp23018_status) goto out;
- out:
- i2c_stop();
+ uint8_t data;
+ data = 0xFF & ~(1 << row);
+ mcp23018_status = i2c_writeReg(I2C_ADDR, GPIOA, &data, 1, BAJJAK_EZ_I2C_TIMEOUT);
+
}
} else {
// select on teensy
diff --git a/keyboards/dc01/left/matrix.c b/keyboards/dc01/left/matrix.c
index d384c6a4bc..fd21d4333b 100644
--- a/keyboards/dc01/left/matrix.c
+++ b/keyboards/dc01/left/matrix.c
@@ -387,37 +387,13 @@ static void unselect_cols(void)
// Complete rows from other modules over i2c
i2c_status_t i2c_transaction(uint8_t address, uint32_t mask, uint8_t col_offset) {
- i2c_status_t status = i2c_start(address, 5);
- if (status < 0) {
- goto error;
+ uint8_t data[MATRIX_ROWS + 1];
+ i2c_status_t status = i2c_readReg(address, 0x01, data, (MATRIX_ROWS + 1), 5);
+
+ for (uint8_t i = 0; i < (MATRIX_ROWS) && status >= 0; i++) { //assemble slave matrix in main matrix
+ matrix[i] &= mask; //mask bits to keep
+ matrix[i] |= ((uint32_t)data[i+1] << (MATRIX_COLS_SCANNED + col_offset)); //add new bits at the end
}
- status = i2c_write(0x01, 50);
- if (status < 0) {
- goto error;
- }
-
- status = i2c_start(address | I2C_READ, 50);
-
- status = i2c_read_ack(50);
- if (status != 0x55) { //synchronization byte
- goto error;
- }
-
- for (uint8_t i = 0; i < MATRIX_ROWS-1 && status >= 0; i++) { //assemble slave matrix in main matrix
- matrix[i] &= mask; //mask bits to keep
- status = i2c_read_ack(50);
- matrix[i] |= ((uint32_t)status << (MATRIX_COLS_SCANNED + col_offset)); //add new bits at the end
- }
- //last read request must be followed by a NACK
- if (status >= 0) {
- matrix[MATRIX_ROWS - 1] &= mask; //mask bits to keep
- status = i2c_read_nack(50);
- matrix[MATRIX_ROWS - 1] |= ((uint32_t)status << (MATRIX_COLS_SCANNED + col_offset)); //add new bits at the end
- }
-
-error:
- i2c_stop();
-
- return (status < 0) ? status : I2C_STATUS_SUCCESS;
+ return status;
}
diff --git a/keyboards/ergodox_ez/ergodox_ez.c b/keyboards/ergodox_ez/ergodox_ez.c
index f088036c4a..3d6272ae66 100644
--- a/keyboards/ergodox_ez/ergodox_ez.c
+++ b/keyboards/ergodox_ez/ergodox_ez.c
@@ -155,31 +155,16 @@ uint8_t init_mcp23018(void) {
// - unused : input : 1
// - input : input : 1
// - driving : output : 0
- mcp23018_status = i2c_start(I2C_ADDR_WRITE, ERGODOX_EZ_I2C_TIMEOUT);
- if (mcp23018_status) goto out;
- mcp23018_status = i2c_write(IODIRA, ERGODOX_EZ_I2C_TIMEOUT);
- if (mcp23018_status) goto out;
- mcp23018_status = i2c_write(0b00000000, ERGODOX_EZ_I2C_TIMEOUT);
- if (mcp23018_status) goto out;
- mcp23018_status = i2c_write(0b00111111, ERGODOX_EZ_I2C_TIMEOUT);
- if (mcp23018_status) goto out;
- i2c_stop();
+ uint8_t data[] = {0b00000000, 0b00111111};
+ mcp23018_status = i2c_writeReg(I2C_ADDR, IODIRA, data, 2, ERGODOX_EZ_I2C_TIMEOUT);
- // set pull-up
- // - unused : on : 1
- // - input : on : 1
- // - driving : off : 0
- mcp23018_status = i2c_start(I2C_ADDR_WRITE, ERGODOX_EZ_I2C_TIMEOUT);
- if (mcp23018_status) goto out;
- mcp23018_status = i2c_write(GPPUA, ERGODOX_EZ_I2C_TIMEOUT);
- if (mcp23018_status) goto out;
- mcp23018_status = i2c_write(0b00000000, ERGODOX_EZ_I2C_TIMEOUT);
- if (mcp23018_status) goto out;
- mcp23018_status = i2c_write(0b00111111, ERGODOX_EZ_I2C_TIMEOUT);
- if (mcp23018_status) goto out;
-
-out:
- i2c_stop();
+ if (!mcp23018_status) {
+ // set pull-up
+ // - unused : on : 1
+ // - input : on : 1
+ // - driving : off : 0
+ mcp23018_status = i2c_writeReg(I2C_ADDR, GPPUA, data, 2, ERGODOX_EZ_I2C_TIMEOUT);
+ }
#ifdef LEFT_LEDS
if (!mcp23018_status) mcp23018_status = ergodox_left_leds_update();
@@ -203,17 +188,11 @@ uint8_t ergodox_left_leds_update(void) {
// - unused : hi-Z : 1
// - input : hi-Z : 1
// - driving : hi-Z : 1
- mcp23018_status = i2c_start(I2C_ADDR_WRITE, ERGODOX_EZ_I2C_TIMEOUT);
- if (mcp23018_status) goto out;
- mcp23018_status = i2c_write(OLATA, ERGODOX_EZ_I2C_TIMEOUT);
- if (mcp23018_status) goto out;
- mcp23018_status = i2c_write(0b11111111 & ~(ergodox_left_led_3 << LEFT_LED_3_SHIFT), ERGODOX_EZ_I2C_TIMEOUT);
- if (mcp23018_status) goto out;
- mcp23018_status = i2c_write(0b11111111 & ~(ergodox_left_led_2 << LEFT_LED_2_SHIFT) & ~(ergodox_left_led_1 << LEFT_LED_1_SHIFT), ERGODOX_EZ_I2C_TIMEOUT);
- if (mcp23018_status) goto out;
+ uint8_t data[2];
+ data[0] = 0b11111111 & ~(ergodox_left_led_3 << LEFT_LED_3_SHIFT);
+ data[1] = 0b11111111 & ~(ergodox_left_led_2 << LEFT_LED_2_SHIFT) & ~(ergodox_left_led_1 << LEFT_LED_1_SHIFT);
+ mcp23018_status = i2c_writeReg(I2C_ADDR, OLATA, data, 2, ERGODOX_EZ_I2C_TIMEOUT);
-out:
- i2c_stop();
return mcp23018_status;
}
#endif
diff --git a/keyboards/ergodox_ez/ergodox_ez.h b/keyboards/ergodox_ez/ergodox_ez.h
index befc114617..df2dbed715 100644
--- a/keyboards/ergodox_ez/ergodox_ez.h
+++ b/keyboards/ergodox_ez/ergodox_ez.h
@@ -26,9 +26,7 @@ along with this program. If not, see .
#include "i2c_master.h"
// I2C aliases and register addresses (see "mcp23018.md")
-#define I2C_ADDR 0b0100000
-#define I2C_ADDR_WRITE ( (I2C_ADDR<<1) | I2C_WRITE )
-#define I2C_ADDR_READ ( (I2C_ADDR<<1) | I2C_READ )
+#define I2C_ADDR (0b0100000<<1)
#define IODIRA 0x00 // i/o direction register
#define IODIRB 0x01
#define GPPUA 0x0C // GPIO pull-up resistor register
diff --git a/keyboards/ergodox_ez/led_i2c.c b/keyboards/ergodox_ez/led_i2c.c
index a8802858ec..80dabf4815 100644
--- a/keyboards/ergodox_ez/led_i2c.c
+++ b/keyboards/ergodox_ez/led_i2c.c
@@ -24,30 +24,41 @@ along with this program. If not, see .
# include "ws2812.h"
void setleds_custom(rgb_led_t *led, uint16_t led_num) {
- i2c_init();
- i2c_start(0x84, ERGODOX_EZ_I2C_TIMEOUT);
+ uint16_t length = 0;
int i = 0;
+ int j = 0;
+# ifdef RGBW
+ int bytes_per_led = 4;
+# else
+ int bytes_per_led = 3;
+# endif
# if defined(ERGODOX_LED_30)
// prevent right-half code from trying to bitbang all 30
// so with 30 LEDs, we count from 29 to 15 here, and the
// other half does 0 to 14.
uint8_t half_led_num = RGBLIGHT_LED_COUNT / 2;
+ length = half_led_num * bytes_per_led;
+ uint8_t data[length];
for (i = half_led_num + half_led_num - 1; i >= half_led_num; --i)
# elif defined(ERGODOX_LED_15_MIRROR)
+ length = led_num * bytes_per_led;
+ uint8_t data[length];
for (i = 0; i < led_num; ++i)
# else // ERGDOX_LED_15 non-mirrored
+ length = led_num * bytes_per_led;
+ uint8_t data[length];
for (i = led_num - 1; i >= 0; --i)
# endif
{
- uint8_t *data = (uint8_t *)(led + i);
- i2c_write(*data++, ERGODOX_EZ_I2C_TIMEOUT);
- i2c_write(*data++, ERGODOX_EZ_I2C_TIMEOUT);
- i2c_write(*data++, ERGODOX_EZ_I2C_TIMEOUT);
+ uint8_t *data_byte = (uint8_t *)(led + i);
+ data[j++] = data_byte[0];
+ data[j++] = data_byte[1];
+ data[j++] = data_byte[2];
#ifdef RGBW
- i2c_write(*data++, ERGODOX_EZ_I2C_TIMEOUT);
+ data[j++] = data_byte[3];
#endif
}
- i2c_stop();
+ i2c_transmit(0x84, data, sizeof(data), ERGODOX_EZ_I2C_TIMEOUT);
ws2812_setleds(led, led_num);
}
diff --git a/keyboards/ergodox_ez/matrix.c b/keyboards/ergodox_ez/matrix.c
index e84a5e2bd3..28bee05779 100644
--- a/keyboards/ergodox_ez/matrix.c
+++ b/keyboards/ergodox_ez/matrix.c
@@ -146,13 +146,8 @@ static matrix_row_t read_cols(uint8_t row) {
uint8_t data = 0;
// reading GPIOB (column port) since in mcp23018's sequential mode
// it is addressed directly after writing to GPIOA in select_row()
- mcp23018_status = i2c_start(I2C_ADDR_READ, ERGODOX_EZ_I2C_TIMEOUT); if (mcp23018_status) goto out;
- mcp23018_status = i2c_read_nack(ERGODOX_EZ_I2C_TIMEOUT); if (mcp23018_status < 0) goto out;
- data = ~((uint8_t)mcp23018_status);
- mcp23018_status = I2C_STATUS_SUCCESS;
- out:
- i2c_stop();
- return data;
+ mcp23018_status = i2c_receive(I2C_ADDR, &data, 1, ERGODOX_EZ_I2C_TIMEOUT);
+ return ~data;
}
} else {
/* read from teensy
@@ -196,11 +191,9 @@ static void select_row(uint8_t row) {
if (!mcp23018_status) {
// set active row low : 0
// set other rows hi-Z : 1
- mcp23018_status = i2c_start(I2C_ADDR_WRITE, ERGODOX_EZ_I2C_TIMEOUT); if (mcp23018_status) goto out;
- mcp23018_status = i2c_write(GPIOA, ERGODOX_EZ_I2C_TIMEOUT); if (mcp23018_status) goto out;
- mcp23018_status = i2c_write(0xFF & ~(1 << row), ERGODOX_EZ_I2C_TIMEOUT); if (mcp23018_status) goto out;
- out:
- i2c_stop();
+ uint8_t data;
+ data = 0xFF & ~(1 << row);
+ mcp23018_status = i2c_writeReg(I2C_ADDR, GPIOA, &data, 1, ERGODOX_EZ_I2C_TIMEOUT);
}
} else {
// select on teensy
diff --git a/keyboards/ferris/0_2/matrix.c b/keyboards/ferris/0_2/matrix.c
index af4b045eb8..cf26385f4c 100644
--- a/keyboards/ferris/0_2/matrix.c
+++ b/keyboards/ferris/0_2/matrix.c
@@ -42,9 +42,7 @@ extern i2c_status_t mcp23017_status;
// All address pins of the mcp23017 are connected to the ground on the ferris
// | 0 | 1 | 0 | 0 | A2 | A1 | A0 |
// | 0 | 1 | 0 | 0 | 0 | 0 | 0 |
-#define I2C_ADDR 0b0100000
-#define I2C_ADDR_WRITE ((I2C_ADDR << 1) | I2C_WRITE)
-#define I2C_ADDR_READ ((I2C_ADDR << 1) | I2C_READ)
+#define I2C_ADDR (0b0100000 << 1)
// Register addresses
// See https://github.com/adafruit/Adafruit-MCP23017-Arduino-Library/blob/master/Adafruit_MCP23017.h
@@ -77,9 +75,9 @@ uint8_t init_mcp23017(void) {
// - driving : output : 0
// This means: we will read all the bits on GPIOA
// This means: we will write to the pins 0-4 on GPIOB (in select_rows)
- uint8_t buf[] = {IODIRA, 0b11111111, 0b11110000};
+ uint8_t buf[] = {0b11111111, 0b11110000};
print("before transmit\n");
- mcp23017_status = i2c_transmit(I2C_ADDR_WRITE, buf, sizeof(buf), MCP23017_I2C_TIMEOUT);
+ mcp23017_status = i2c_writeReg(I2C_ADDR, IODIRA, buf, sizeof(buf), MCP23017_I2C_TIMEOUT)
uprintf("after transmit %i\n", mcp23017_status);
if (!mcp23017_status) {
// set pull-up
@@ -88,8 +86,7 @@ uint8_t init_mcp23017(void) {
// - driving : off : 0
// This means: we will read all the bits on GPIOA
// This means: we will write to the pins 0-4 on GPIOB (in select_rows)
- uint8_t pullup_buf[] = {GPPUA, 0b11111111, 0b11110000};
- mcp23017_status = i2c_transmit(I2C_ADDR_WRITE, pullup_buf, sizeof(pullup_buf), MCP23017_I2C_TIMEOUT);
+ mcp23017_status = i2c_writeReg(I2C_ADDR, GPPUA, buf, sizeof(buf), MCP23017_I2C_TIMEOUT)
uprintf("after transmit2 %i\n", mcp23017_status);
}
return mcp23017_status;
@@ -189,18 +186,13 @@ static matrix_row_t read_cols(uint8_t row) {
if (mcp23017_status) { // if there was an error
return 0;
} else {
- uint8_t buf[] = {MCP23017_GPIOA};
- mcp23017_status = i2c_transmit(I2C_ADDR_WRITE, buf, sizeof(buf), MCP23017_I2C_TIMEOUT);
// We read all the pins on GPIOA.
// The initial state was all ones and any depressed key at a given column for the currently selected row will have its bit flipped to zero.
// The return value is a row as represented in the generic matrix code were the rightmost bits represent the lower columns and zeroes represent non-depressed keys while ones represent depressed keys.
// Since the pins connected to eact columns are sequential, and counting from zero up (col 5 -> GPIOA0, col 6 -> GPIOA1 and so on), the only transformation needed is a bitwise not to swap all zeroes and ones.
uint8_t data[] = {0};
- if (!mcp23017_status) {
- mcp23017_status = i2c_receive(I2C_ADDR_READ, data, sizeof(data), MCP23017_I2C_TIMEOUT);
- data[0] = ~(data[0]);
- }
- return data[0];
+ mcp23017_status = i2c_readReg(I2C_ADDR, MCP23017_GPIOA, data, sizeof(data), MCP23017_I2C_TIMEOUT);
+ return ~data[0];
}
}
}
@@ -244,8 +236,8 @@ static void select_row(uint8_t row) {
} else {
// Select the desired row by writing a byte for the entire GPIOB bus where only the bit representing the row we want to select is a zero (write instruction) and every other bit is a one.
// Note that the row - MATRIX_ROWS_PER_SIDE reflects the fact that being on the right hand, the columns are numbered from MATRIX_ROWS_PER_SIDE to MATRIX_ROWS, but the pins we want to write to are indexed from zero up on the GPIOB bus.
- uint8_t buf[] = {MCP23017_GPIOB, 0xFF & ~(1 << (row - MATRIX_ROWS_PER_SIDE))};
- mcp23017_status = i2c_transmit(I2C_ADDR_WRITE, buf, sizeof(buf), I2C_TIMEOUT);
+ uint8_t buf[] = {0xFF & ~(1 << (row - MATRIX_ROWS_PER_SIDE))};
+ mcp23017_status = i2c_writeReg(I2C_ADDR, MCP23017_GPIOB, buf, sizeof(buf), MCP23017_I2C_TIMEOUT);
}
}
}
diff --git a/keyboards/gboards/ergotaco/ergotaco.c b/keyboards/gboards/ergotaco/ergotaco.c
index daeba1e0a6..694e07f031 100644
--- a/keyboards/gboards/ergotaco/ergotaco.c
+++ b/keyboards/gboards/ergotaco/ergotaco.c
@@ -49,23 +49,17 @@ uint8_t init_mcp23018(void) {
// - unused : input : 1
// - input : input : 1
// - driving : output : 0
- mcp23018_status = i2c_start(I2C_ADDR_WRITE, ERGODOX_EZ_I2C_TIMEOUT); if (mcp23018_status) goto out;
- mcp23018_status = i2c_write(IODIRA, ERGODOX_EZ_I2C_TIMEOUT); if (mcp23018_status) goto out;
- mcp23018_status = i2c_write(0b00000000, ERGODOX_EZ_I2C_TIMEOUT); if (mcp23018_status) goto out;
- mcp23018_status = i2c_write(0b11111111, ERGODOX_EZ_I2C_TIMEOUT); if (mcp23018_status) goto out;
- i2c_stop();
+ uint8_t data[] = {0b00000000, 0b00111111};
+ mcp23018_status = i2c_writeReg(I2C_ADDR, IODIRA, data, sizeof(data), ERGODOX_EZ_I2C_TIMEOUT);
- // set pull-up
- // - unused : on : 1
- // - input : on : 1
- // - driving : off : 0
- mcp23018_status = i2c_start(I2C_ADDR_WRITE, ERGODOX_EZ_I2C_TIMEOUT); if (mcp23018_status) goto out;
- mcp23018_status = i2c_write(GPPUA, ERGODOX_EZ_I2C_TIMEOUT); if (mcp23018_status) goto out;
- mcp23018_status = i2c_write(0b00000000, ERGODOX_EZ_I2C_TIMEOUT); if (mcp23018_status) goto out;
- mcp23018_status = i2c_write(0b11111111, ERGODOX_EZ_I2C_TIMEOUT); if (mcp23018_status) goto out;
+ if (!mcp23018_status) {
+ // set pull-up
+ // - unused : on : 1
+ // - input : on : 1
+ // - driving : off : 0
+ mcp23018_status = i2c_writeReg(I2C_ADDR, GPPUA, data, sizeof(data), ERGODOX_EZ_I2C_TIMEOUT);
+ }
-out:
- i2c_stop();
// SREG=sreg_prev;
//uprintf("Init %x\n", mcp23018_status);
return mcp23018_status;
diff --git a/keyboards/gboards/ergotaco/ergotaco.h b/keyboards/gboards/ergotaco/ergotaco.h
index e23fc264f4..6ab47ced74 100644
--- a/keyboards/gboards/ergotaco/ergotaco.h
+++ b/keyboards/gboards/ergotaco/ergotaco.h
@@ -11,10 +11,7 @@ extern i2c_status_t mcp23018_status;
#define ERGODOX_EZ_I2C_TIMEOUT 1000
// I2C aliases and register addresses (see "mcp23018.md")
-//#define I2C_ADDR 0b0100000
-#define I2C_ADDR 0x20
-#define I2C_ADDR_WRITE ( (I2C_ADDR<<1) | I2C_WRITE )
-#define I2C_ADDR_READ ( (I2C_ADDR<<1) | I2C_READ )
+#define I2C_ADDR (0x20<<1)
#define IODIRA 0x00 // i/o direction register
#define IODIRB 0x01
#define GPPUA 0x0C // GPIO pull-up resistor register
diff --git a/keyboards/gboards/ergotaco/matrix.c b/keyboards/gboards/ergotaco/matrix.c
index 63d4c4f5f3..3c49f2802e 100644
--- a/keyboards/gboards/ergotaco/matrix.c
+++ b/keyboards/gboards/ergotaco/matrix.c
@@ -234,15 +234,8 @@ static matrix_row_t read_cols(uint8_t row)
return 0;
} else {
uint8_t data = 0;
- mcp23018_status = i2c_start(I2C_ADDR_WRITE, ERGODOX_EZ_I2C_TIMEOUT); if (mcp23018_status) goto out;
- mcp23018_status = i2c_write(GPIOB, ERGODOX_EZ_I2C_TIMEOUT); if (mcp23018_status) goto out;
- mcp23018_status = i2c_start(I2C_ADDR_READ, ERGODOX_EZ_I2C_TIMEOUT); if (mcp23018_status) goto out;
- mcp23018_status = i2c_read_nack(ERGODOX_EZ_I2C_TIMEOUT); if (mcp23018_status < 0) goto out;
- data = (~((uint8_t)mcp23018_status) >> 2) & 0x01 ;
- mcp23018_status = I2C_STATUS_SUCCESS;
- out:
- i2c_stop();
-
+ mcp23018_status = i2c_readReg(I2C_ADDR, GPIOB, &data, 1, ERGODOX_EZ_I2C_TIMEOUT);
+ data = (~((uint8_t)data) >> 2) & 0x01 ;
#ifdef DEBUG_MATRIX
if (data != 0x00) xprintf("I2C: %d\n", data);
#endif
@@ -274,11 +267,8 @@ static void select_row(uint8_t row)
if (mcp23018_status) { // do nothing on error
// Read using bitmask
} else { // set active row low : 0 // set other rows hi-Z : 1
- mcp23018_status = i2c_start(I2C_ADDR_WRITE, ERGODOX_EZ_I2C_TIMEOUT); if (mcp23018_status) goto out;
- mcp23018_status = i2c_write(GPIOA, ERGODOX_EZ_I2C_TIMEOUT); if (mcp23018_status) goto out;
- mcp23018_status = i2c_write(~(1<> 1) | ((PINF & (COL1 | COL2 | COL3)) >> 3)) & 0xF);
@@ -213,14 +205,10 @@ static void select_row(uint8_t row) {
// select on mcp23018
if (mcp23018_status) { // do nothing on error
} else { // set active row low : 0 // set other rows hi-Z : 1
- mcp23018_status = i2c_start(I2C_ADDR_WRITE, I2C_TIMEOUT);
- if (mcp23018_status) goto out;
- mcp23018_status = i2c_write(GPIOA, I2C_TIMEOUT);
- if (mcp23018_status) goto out;
- mcp23018_status = i2c_write(0xFF & ~(1 << (row + 1)), I2C_TIMEOUT);
- if (mcp23018_status) goto out;
- out:
- i2c_stop();
+ uint8_t data;
+ data = 0xFF & ~(1 << (row + 1));
+ mcp23018_status = i2c_writeReg(I2C_ADDR, GPIOA, &data, 1, I2C_TIMEOUT);
+
}
} else {
setPinOutput(row_pins[row - MATRIX_ROWS_PER_SIDE]);
diff --git a/keyboards/handwired/d48/ds1307.c b/keyboards/handwired/d48/ds1307.c
index 2b3a88f315..5f4931bbf8 100644
--- a/keyboards/handwired/d48/ds1307.c
+++ b/keyboards/handwired/d48/ds1307.c
@@ -14,7 +14,6 @@ void ds1307_set_time(uint8_t h, uint8_t m, uint8_t s) {
void ds1307_get_time(uint8_t *h, uint8_t *m, uint8_t *s) {
uint8_t data[3];
i2c_read_register(DS1307_ADDR, 0, data, 3, 100);
- i2c_stop();
*s = (data[0] & 0b1111) + ((data[0] & 0b1110000) >> 4) * 10;
*m = (data[1] & 0b1111) + ((data[1] & 0b1110000) >> 4) * 10;
*h = (data[2] & 0b1111) + ((data[2] & 0b0110000) >> 4) * 10;
diff --git a/keyboards/handwired/frenchdev/frenchdev.c b/keyboards/handwired/frenchdev/frenchdev.c
index 6eed4de5ff..65f1ccce4b 100644
--- a/keyboards/handwired/frenchdev/frenchdev.c
+++ b/keyboards/handwired/frenchdev/frenchdev.c
@@ -83,23 +83,16 @@ uint8_t init_mcp23018(void) {
// - unused : input : 1
// - input : input : 1
// - driving : output : 0
- mcp23018_status = i2c_start(I2C_ADDR_WRITE, I2C_TIMEOUT); if (mcp23018_status) goto out;
- mcp23018_status = i2c_write(IODIRA, I2C_TIMEOUT); if (mcp23018_status) goto out;
- mcp23018_status = i2c_write(0b00000000, I2C_TIMEOUT); if (mcp23018_status) goto out;
- mcp23018_status = i2c_write(0b00111111, I2C_TIMEOUT); if (mcp23018_status) goto out;
- i2c_stop();
+ uint8_t data[] = {0b00000000, 0b00111111};
+ mcp23018_status = i2c_writeReg(I2C_ADDR, IODIRA, data, sizeof(data), I2C_TIMEOUT);
- // set pull-up
- // - unused : on : 1
- // - input : on : 1
- // - driving : off : 0
- mcp23018_status = i2c_start(I2C_ADDR_WRITE, I2C_TIMEOUT); if (mcp23018_status) goto out;
- mcp23018_status = i2c_write(GPPUA, I2C_TIMEOUT); if (mcp23018_status) goto out;
- mcp23018_status = i2c_write(0b00000000, I2C_TIMEOUT); if (mcp23018_status) goto out;
- mcp23018_status = i2c_write(0b00111111, I2C_TIMEOUT); if (mcp23018_status) goto out;
-
-out:
- i2c_stop();
+ if (!mcp23018_status) {
+ // set pull-up
+ // - unused : on : 1
+ // - input : on : 1
+ // - driving : off : 0
+ mcp23018_status = i2c_writeReg(I2C_ADDR, GPPUA, data, sizeof(data), I2C_TIMEOUT);
+ }
// SREG=sreg_prev;
diff --git a/keyboards/handwired/frenchdev/frenchdev.h b/keyboards/handwired/frenchdev/frenchdev.h
index 6bea49d87b..0f1ac7dcaa 100644
--- a/keyboards/handwired/frenchdev/frenchdev.h
+++ b/keyboards/handwired/frenchdev/frenchdev.h
@@ -7,9 +7,7 @@
#include
// I2C aliases and register addresses (see "mcp23018.md" on tmk repository)
-#define I2C_ADDR 0b0100000
-#define I2C_ADDR_WRITE ( (I2C_ADDR<<1) | I2C_WRITE )
-#define I2C_ADDR_READ ( (I2C_ADDR<<1) | I2C_READ )
+#define I2C_ADDR (0b0100000<<1)
#define IODIRA 0x00 // i/o direction register
#define IODIRB 0x01
#define GPPUA 0x0C // GPIO pull-up resistor register
diff --git a/keyboards/handwired/frenchdev/matrix.c b/keyboards/handwired/frenchdev/matrix.c
index 3e859d47ef..3afc6dcee6 100644
--- a/keyboards/handwired/frenchdev/matrix.c
+++ b/keyboards/handwired/frenchdev/matrix.c
@@ -224,15 +224,9 @@ static matrix_row_t read_cols(uint8_t row)
return 0;
} else {
uint8_t data = 0;
- mcp23018_status = i2c_start(I2C_ADDR_WRITE, I2C_TIMEOUT); if (mcp23018_status) goto out;
- mcp23018_status = i2c_write(GPIOB, I2C_TIMEOUT); if (mcp23018_status) goto out;
- mcp23018_status = i2c_start(I2C_ADDR_READ, I2C_TIMEOUT); if (mcp23018_status) goto out;
- data = i2c_read_nack(I2C_TIMEOUT); if (mcp23018_status < 0) goto out;
- data = ~((uint8_t)mcp23018_status);
- mcp23018_status = I2C_STATUS_SUCCESS;
- out:
- i2c_stop();
- return data;
+ mcp23018_status = i2c_readReg(I2C_ADDR, GPIOB, &data, 1, I2C_TIMEOUT);
+
+ return ~data;
}
} else {
// read from teensy
@@ -263,11 +257,10 @@ static void unselect_rows(void)
// do nothing
} else {
// set all rows hi-Z : 1
- mcp23018_status = i2c_start(I2C_ADDR_WRITE, I2C_TIMEOUT); if (mcp23018_status) goto out;
- mcp23018_status = i2c_write(GPIOA, I2C_TIMEOUT); if (mcp23018_status) goto out;
- mcp23018_status = i2c_write( 0xFF & ~(0<<8), I2C_TIMEOUT); if (mcp23018_status) goto out;
- out:
- i2c_stop();
+ uint8_t data;
+ data = 0xFF & ~(0<<8);
+ mcp23018_status = i2c_writeReg(I2C_ADDR, GPIOA, &data, 1, I2C_TIMEOUT);
+
}
// unselect on teensy
@@ -289,11 +282,8 @@ static void select_row(uint8_t row)
} else {
// set active row low : 0
// set other rows hi-Z : 1
- mcp23018_status = i2c_start(I2C_ADDR_WRITE, I2C_TIMEOUT); if (mcp23018_status) goto out;
- mcp23018_status = i2c_write(GPIOA, I2C_TIMEOUT); if (mcp23018_status) goto out;
- mcp23018_status = i2c_write( 0xFF & ~(1<.
#define I2C_TIMEOUT 100
-#define I2C_ADDR 0b0100000
-#define I2C_ADDR_WRITE ( (I2C_ADDR<<1) | I2C_WRITE )
-#define I2C_ADDR_READ ( (I2C_ADDR<<1) | I2C_READ )
+#define I2C_ADDR (0b0100000<<1)
#define IODIRA 0x00 // i/o direction register
#define IODIRB 0x01
#define GPPUA 0x0C // GPIO pull-up resistor register
@@ -159,9 +157,6 @@ void init_expander(void) {
#endif
}
- expander_status = i2c_start(I2C_ADDR_WRITE, I2C_TIMEOUT); if (expander_status) goto out;
- expander_status = i2c_write(IODIRA, I2C_TIMEOUT); if (expander_status) goto out;
-
/*
Pin direction and pull-up depends on both the diode direction
and on whether the column register is GPIOA or GPIOB
@@ -176,50 +171,27 @@ void init_expander(void) {
#if (EXPANDER_COL_REGISTER == GPIOA)
# if (DIODE_DIRECTION == COL2ROW)
- expander_status = i2c_write(expander_input_pin_mask, I2C_TIMEOUT); if (expander_status) goto out;
- expander_status = i2c_write(0, I2C_TIMEOUT); if (expander_status) goto out;
+ uint8_t data[] = { expander_input_pin_mask, 0};
# elif (DIODE_DIRECTION == ROW2COL)
- expander_status = i2c_write(0, I2C_TIMEOUT); if (expander_status) goto out;
- expander_status = i2c_write(expander_input_pin_mask, I2C_TIMEOUT); if (expander_status) goto out;
+ uint8_t data[] = { 0, expander_input_pin_mask};
# endif
#elif (EXPANDER_COL_REGISTER == GPIOB)
# if (DIODE_DIRECTION == COL2ROW)
- expander_status = i2c_write(0, I2C_TIMEOUT); if (expander_status) goto out;
- expander_status = i2c_write(expander_input_pin_mask, I2C_TIMEOUT); if (expander_status) goto out;
+ uint8_t data[] = { 0, expander_input_pin_mask};
# elif (DIODE_DIRECTION == ROW2COL)
- expander_status = i2c_write(expander_input_pin_mask, I2C_TIMEOUT); if (expander_status) goto out;
- expander_status = i2c_write(0, I2C_TIMEOUT); if (expander_status) goto out;
+ uint8_t data[] = { expander_input_pin_mask, 0};
# endif
#endif
+ expander_status = i2c_writeReg(I2C_ADDR, IODIRA, data, sizeof(data), I2C_TIMEOUT);
- i2c_stop();
+ if (!expander_status) {
+ // set pull-up
+ // - unused : off : 0
+ // - input : on : 1
+ // - driving : off : 0
+ expander_status = i2c_writeReg(I2C_ADDR, GPPUA, data, sizeof(data), I2C_TIMEOUT);
+ }
- // set pull-up
- // - unused : off : 0
- // - input : on : 1
- // - driving : off : 0
- expander_status = i2c_start(I2C_ADDR_WRITE, I2C_TIMEOUT); if (expander_status) goto out;
- expander_status = i2c_write(GPPUA, I2C_TIMEOUT); if (expander_status) goto out;
-#if (EXPANDER_COL_REGISTER == GPIOA)
-# if (DIODE_DIRECTION == COL2ROW)
- expander_status = i2c_write(expander_input_pin_mask, I2C_TIMEOUT); if (expander_status) goto out;
- expander_status = i2c_write(0, I2C_TIMEOUT); if (expander_status) goto out;
-# elif (DIODE_DIRECTION == ROW2COL)
- expander_status = i2c_write(0, I2C_TIMEOUT); if (expander_status) goto out;
- expander_status = i2c_write(expander_input_pin_mask, I2C_TIMEOUT); if (expander_status) goto out;
-# endif
-#elif (EXPANDER_COL_REGISTER == GPIOB)
-# if (DIODE_DIRECTION == COL2ROW)
- expander_status = i2c_write(0, I2C_TIMEOUT); if (expander_status) goto out;
- expander_status = i2c_write(expander_input_pin_mask, I2C_TIMEOUT); if (expander_status) goto out;
-# elif (DIODE_DIRECTION == ROW2COL)
- expander_status = i2c_write(expander_input_pin_mask, I2C_TIMEOUT); if (expander_status) goto out;
- expander_status = i2c_write(0, I2C_TIMEOUT); if (expander_status) goto out;
-# endif
-#endif
-
-out:
- i2c_stop();
}
uint8_t matrix_scan(void)
@@ -332,14 +304,9 @@ static bool read_cols_on_row(matrix_row_t current_matrix[], uint8_t current_row)
// Read columns from expander, unless it's in an error state
if (! expander_status) {
- expander_status = i2c_start(I2C_ADDR_WRITE, I2C_TIMEOUT); if (expander_status) goto out;
- expander_status = i2c_write(EXPANDER_COL_REGISTER, I2C_TIMEOUT); if (expander_status) goto out;
- expander_status = i2c_start(I2C_ADDR_READ, I2C_TIMEOUT); if (expander_status) goto out;
-
- current_matrix[current_row] |= (~i2c_read_nack(I2C_TIMEOUT)) & expander_input_pin_mask;
-
- out:
- i2c_stop();
+ uint8_t data;
+ i2c_readReg(I2C_ADDR, EXPANDER_COL_REGISTER, &data, 1, I2C_TIMEOUT);
+ current_matrix[current_row] |= (~data) & expander_input_pin_mask;
}
// Read columns from onboard pins
@@ -361,11 +328,8 @@ static void select_row(uint8_t row) {
if (! expander_status) {
// set active row low : 0
// set other rows hi-Z : 1
- expander_status = i2c_start(I2C_ADDR_WRITE, I2C_TIMEOUT); if (expander_status) goto out;
- expander_status = i2c_write(EXPANDER_ROW_REGISTER, I2C_TIMEOUT); if (expander_status) goto out;
- expander_status = i2c_write(0xFF & ~(1< GPIOA0, col 6 -> GPIOA1 and so on), the only transformation needed is a bitwise not to swap all zeroes and ones.
uint8_t data[] = {0};
if (!mcp23017_status) {
- mcp23017_status = i2c_receive(I2C_ADDR_READ, data, sizeof(data), I2C_TIMEOUT);
+ mcp23017_status = i2c_receive(I2C_ADDR, data, sizeof(data), I2C_TIMEOUT);
data[0] = ~(data[0]);
}
return data[0];
@@ -249,7 +247,7 @@ static void select_row(uint8_t row) {
// Select the desired row by writing a byte for the entire GPIOB bus where only the bit representing the row we want to select is a zero (write instruction) and every other bit is a one.
// Note that the row - MATRIX_ROWS_PER_SIDE reflects the fact that being on the right hand, the columns are numbered from MATRIX_ROWS_PER_SIDE to MATRIX_ROWS, but the pins we want to write to are indexed from zero up on the GPIOB bus.
uint8_t buf[] = {GPIOB, 0xFF & ~(1 << (row - MATRIX_ROWS_PER_SIDE))};
- mcp23017_status = i2c_transmit(I2C_ADDR_WRITE, buf, sizeof(buf), I2C_TIMEOUT);
+ mcp23017_status = i2c_transmit(I2C_ADDR, buf, sizeof(buf), I2C_TIMEOUT);
}
}
}
diff --git a/keyboards/kagizaraya/chidori/board.c b/keyboards/kagizaraya/chidori/board.c
index 117a4c0127..34e57a8874 100644
--- a/keyboards/kagizaraya/chidori/board.c
+++ b/keyboards/kagizaraya/chidori/board.c
@@ -124,10 +124,9 @@ static void board_slave_init(void) {
if (board_is_master(board)) {
continue;
}
- if (i2c_start(EXPANDER_ADDR(board->i2c_address), BOARD_I2C_TIMEOUT) != I2C_STATUS_SUCCESS) {
+ if (i2c_ping_address(EXPANDER_ADDR(board->i2c_address), BOARD_I2C_TIMEOUT) != I2C_STATUS_SUCCESS) {
continue;
}
- i2c_stop();
if (board_slave_config(board)) {
board->initialized = true;
}
diff --git a/keyboards/nek_type_a/nek_type_a.h b/keyboards/nek_type_a/nek_type_a.h
index dda9e2bdde..fe6fb27a45 100644
--- a/keyboards/nek_type_a/nek_type_a.h
+++ b/keyboards/nek_type_a/nek_type_a.h
@@ -21,9 +21,7 @@
#include
#include
-#define I2C_ADDR 0b0100000
-#define I2C_ADDR_WRITE ( (I2C_ADDR<<1) | I2C_WRITE )
-#define I2C_ADDR_READ ( (I2C_ADDR<<1) | I2C_READ )
+#define I2C_ADDR (0b0100000<<1)
#define IODIRA 0x00 // i/o direction register
#define IODIRB 0x01
#define GPPUA 0x0C // GPIO pull-up resistor register
diff --git a/keyboards/system76/launch_1/usb_mux.c b/keyboards/system76/launch_1/usb_mux.c
index 1c6dd2376e..dd51b7c4b2 100644
--- a/keyboards/system76/launch_1/usb_mux.c
+++ b/keyboards/system76/launch_1/usb_mux.c
@@ -77,51 +77,14 @@ i2c_status_t usb7206_read_reg(struct USB7206* self, uint32_t addr, uint8_t* data
return status;
}
- uint8_t read[2] = {
- 0x00, // Buffer address MSB: always 0
- 0x06, // Buffer address LSB: 6 to skip header
- };
-
- status = i2c_start((self->addr << 1) | I2C_WRITE, I2C_TIMEOUT);
- if (status >= 0) {
- for (uint16_t i = 0; i < sizeof(read); i++) {
- status = i2c_write(read[i], I2C_TIMEOUT);
- if (status < 0) {
- goto error;
- }
- }
- } else {
- goto error;
- }
-
- status = i2c_start((self->addr << 1) | I2C_READ, I2C_TIMEOUT);
- if (status < 0) {
- goto error;
- }
-
- // Read and ignore buffer length
- status = i2c_read_ack(I2C_TIMEOUT);
- if (status < 0) {
- goto error;
- }
+ uint16_t read = 0x0006; // Buffer address 6 to skip header
+ uint8_t data_with_buffer_length[length];
+ status = i2c_readReg16((self->addr << 1), read, data_with_buffer_length, length, I2C_TIMEOUT);
for (uint16_t i = 0; i < (length - 1) && status >= 0; i++) {
- status = i2c_read_ack(I2C_TIMEOUT);
- if (status >= 0) {
- data[i] = (uint8_t)status;
- }
+ data[i] = data_with_buffer_length[i+1];
}
- if (status >= 0) {
- status = i2c_read_nack(I2C_TIMEOUT);
- if (status >= 0) {
- data[(length - 1)] = (uint8_t)status;
- }
- }
-
-error:
- i2c_stop();
-
return (status < 0) ? status : length;
}
@@ -160,35 +123,21 @@ i2c_status_t usb7206_write_reg(struct USB7206* self, uint32_t addr, uint8_t* dat
(uint8_t)(addr >> 8), // Register address byte 1
(uint8_t)(addr >> 0), // Register address byte 0
};
+ uint8_t send_buffer_length = sizeof(register_write) + length;
+ uint8_t send_buffer[send_buffer_length];
+ uint8_t j = 0;
- status = i2c_start((self->addr << 1) | I2C_WRITE, I2C_TIMEOUT);
- if (status >= 0) {
- for (uint16_t i = 0; i < sizeof(register_write); i++) {
- status = i2c_write(register_write[i], I2C_TIMEOUT);
- if (status < 0) {
- goto error;
- }
- }
-
- for (uint16_t i = 0; i < length; i++) {
- status = i2c_write(data[i], I2C_TIMEOUT);
- if (status < 0) {
- goto error;
- }
- }
- } else {
- goto error;
+ for (uint16_t i = 0; i < sizeof(register_write); i++) {
+ send_buffer[j++] = register_write[i];
}
- i2c_stop();
+ for (uint16_t i = 0; i < length; i++) {
+ send_buffer[j++] = data[i];
+ }
+
+ status = i2c_transmit((self->addr << 1), send_buffer, send_buffer_length, I2C_TIMEOUT);
status = usb7206_register_access(self);
- if (status < 0) {
- goto error;
- }
-
-error:
- i2c_stop();
return (status < 0) ? status : length;
}
diff --git a/keyboards/ymdk/sp64/matrix.c b/keyboards/ymdk/sp64/matrix.c
index b5f0e10462..6f8c7962eb 100644
--- a/keyboards/ymdk/sp64/matrix.c
+++ b/keyboards/ymdk/sp64/matrix.c
@@ -114,7 +114,7 @@ uint8_t matrix_scan(void)
#ifdef RIGHT_HALF
uint8_t data = 0x7F;
// Receive the columns from right half
- i2c_receive(I2C_ADDR_WRITE, &data, 1, MCP23018_I2C_TIMEOUT);
+ i2c_receive(I2C_ADDR, &data, 1, MCP23018_I2C_TIMEOUT);
cols |= ((~(data) & 0x7F) << 7);
#endif
@@ -162,7 +162,7 @@ static void matrix_select_row(uint8_t row)
//Set the remote row on port A
txdata[0] = GPIOA;
txdata[1] = 0xFF & ~(1<= 0; i++) {
+ status = i2c_write(pgm_read_byte((const char*)data++), timeout);
+ }
+
+ i2c_stop();
+
+ return status;
+}
+
i2c_status_t i2c_receive(uint8_t address, uint8_t* data, uint16_t length, uint16_t timeout) {
i2c_status_t status = i2c_start(address | I2C_ACTION_READ, timeout);
@@ -293,7 +311,8 @@ error:
return (status < 0) ? status : I2C_STATUS_SUCCESS;
}
-void i2c_stop(void) {
- // transmit STOP condition
- TWCR = (1 << TWINT) | (1 << TWEN) | (1 << TWSTO);
-}
+__attribute__((weak)) i2c_status_t i2c_ping_address(uint8_t address, uint16_t timeout) {
+ i2c_status_t status = i2c_start(address, timeout);
+ i2c_stop();
+ return status;
+}
\ No newline at end of file
diff --git a/platforms/avr/drivers/i2c_master.h b/platforms/avr/drivers/i2c_master.h
index 18587c4a57..b797997619 100644
--- a/platforms/avr/drivers/i2c_master.h
+++ b/platforms/avr/drivers/i2c_master.h
@@ -41,14 +41,11 @@ typedef int16_t i2c_status_t;
#define I2C_TIMEOUT_INFINITE (0xFFFF)
void i2c_init(void);
-i2c_status_t i2c_start(uint8_t address, uint16_t timeout);
-i2c_status_t i2c_write(uint8_t data, uint16_t timeout);
-int16_t i2c_read_ack(uint16_t timeout);
-int16_t i2c_read_nack(uint16_t timeout);
i2c_status_t i2c_transmit(uint8_t address, const uint8_t* data, uint16_t length, uint16_t timeout);
+i2c_status_t i2c_transmit_P(uint8_t address, const uint8_t* data, uint16_t length, uint16_t timeout);
i2c_status_t i2c_receive(uint8_t address, uint8_t* data, uint16_t length, uint16_t timeout);
i2c_status_t i2c_write_register(uint8_t devaddr, uint8_t regaddr, const uint8_t* data, uint16_t length, uint16_t timeout);
i2c_status_t i2c_write_register16(uint8_t devaddr, uint16_t regaddr, const uint8_t* data, uint16_t length, uint16_t timeout);
i2c_status_t i2c_read_register(uint8_t devaddr, uint8_t regaddr, uint8_t* data, uint16_t length, uint16_t timeout);
i2c_status_t i2c_read_register16(uint8_t devaddr, uint16_t regaddr, uint8_t* data, uint16_t length, uint16_t timeout);
-void i2c_stop(void);
+i2c_status_t i2c_ping_address(uint8_t address, uint16_t timeout);
diff --git a/platforms/chibios/drivers/i2c_master.c b/platforms/chibios/drivers/i2c_master.c
index 5ee2738e6d..ad11d850dd 100644
--- a/platforms/chibios/drivers/i2c_master.c
+++ b/platforms/chibios/drivers/i2c_master.c
@@ -1,5 +1,6 @@
/* Copyright 2018 Jack Humbert
* Copyright 2018 Yiancar
+ * Copyright 2023 customMK
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
@@ -90,8 +91,6 @@
# endif
#endif
-static uint8_t i2c_address;
-
static const I2CConfig i2cconfig = {
#if defined(USE_I2CV1_CONTRIB)
I2C1_CLOCK_SPEED,
@@ -125,7 +124,7 @@ static i2c_status_t i2c_epilogue(const msg_t status) {
// From ChibiOS HAL: "After a timeout the driver must be stopped and
// restarted because the bus is in an uncertain state." We also issue that
// hard stop in case of any error.
- i2c_stop();
+ i2cStop(&I2C_DRIVER);
return status == MSG_TIMEOUT ? I2C_STATUS_TIMEOUT : I2C_STATUS_ERROR;
}
@@ -150,28 +149,19 @@ __attribute__((weak)) void i2c_init(void) {
}
}
-i2c_status_t i2c_start(uint8_t address) {
- i2c_address = address;
- i2cStart(&I2C_DRIVER, &i2cconfig);
- return I2C_STATUS_SUCCESS;
-}
-
i2c_status_t i2c_transmit(uint8_t address, const uint8_t* data, uint16_t length, uint16_t timeout) {
- i2c_address = address;
i2cStart(&I2C_DRIVER, &i2cconfig);
- msg_t status = i2cMasterTransmitTimeout(&I2C_DRIVER, (i2c_address >> 1), data, length, 0, 0, TIME_MS2I(timeout));
+ msg_t status = i2cMasterTransmitTimeout(&I2C_DRIVER, (address >> 1), data, length, 0, 0, TIME_MS2I(timeout));
return i2c_epilogue(status);
}
i2c_status_t i2c_receive(uint8_t address, uint8_t* data, uint16_t length, uint16_t timeout) {
- i2c_address = address;
i2cStart(&I2C_DRIVER, &i2cconfig);
- msg_t status = i2cMasterReceiveTimeout(&I2C_DRIVER, (i2c_address >> 1), data, length, TIME_MS2I(timeout));
+ msg_t status = i2cMasterReceiveTimeout(&I2C_DRIVER, (address >> 1), data, length, TIME_MS2I(timeout));
return i2c_epilogue(status);
}
i2c_status_t i2c_write_register(uint8_t devaddr, uint8_t regaddr, const uint8_t* data, uint16_t length, uint16_t timeout) {
- i2c_address = devaddr;
i2cStart(&I2C_DRIVER, &i2cconfig);
uint8_t complete_packet[length + 1];
@@ -180,12 +170,11 @@ i2c_status_t i2c_write_register(uint8_t devaddr, uint8_t regaddr, const uint8_t*
}
complete_packet[0] = regaddr;
- msg_t status = i2cMasterTransmitTimeout(&I2C_DRIVER, (i2c_address >> 1), complete_packet, length + 1, 0, 0, TIME_MS2I(timeout));
+ msg_t status = i2cMasterTransmitTimeout(&I2C_DRIVER, (devaddr >> 1), complete_packet, length + 1, 0, 0, TIME_MS2I(timeout));
return i2c_epilogue(status);
}
i2c_status_t i2c_write_register16(uint8_t devaddr, uint16_t regaddr, const uint8_t* data, uint16_t length, uint16_t timeout) {
- i2c_address = devaddr;
i2cStart(&I2C_DRIVER, &i2cconfig);
uint8_t complete_packet[length + 2];
@@ -195,25 +184,27 @@ i2c_status_t i2c_write_register16(uint8_t devaddr, uint16_t regaddr, const uint8
complete_packet[0] = regaddr >> 8;
complete_packet[1] = regaddr & 0xFF;
- msg_t status = i2cMasterTransmitTimeout(&I2C_DRIVER, (i2c_address >> 1), complete_packet, length + 2, 0, 0, TIME_MS2I(timeout));
+ msg_t status = i2cMasterTransmitTimeout(&I2C_DRIVER, (devaddr >> 1), complete_packet, length + 2, 0, 0, TIME_MS2I(timeout));
return i2c_epilogue(status);
}
i2c_status_t i2c_read_register(uint8_t devaddr, uint8_t regaddr, uint8_t* data, uint16_t length, uint16_t timeout) {
- i2c_address = devaddr;
i2cStart(&I2C_DRIVER, &i2cconfig);
- msg_t status = i2cMasterTransmitTimeout(&I2C_DRIVER, (i2c_address >> 1), ®addr, 1, data, length, TIME_MS2I(timeout));
+ msg_t status = i2cMasterTransmitTimeout(&I2C_DRIVER, (devaddr >> 1), ®addr, 1, data, length, TIME_MS2I(timeout));
return i2c_epilogue(status);
}
i2c_status_t i2c_read_register16(uint8_t devaddr, uint16_t regaddr, uint8_t* data, uint16_t length, uint16_t timeout) {
- i2c_address = devaddr;
i2cStart(&I2C_DRIVER, &i2cconfig);
uint8_t register_packet[2] = {regaddr >> 8, regaddr & 0xFF};
- msg_t status = i2cMasterTransmitTimeout(&I2C_DRIVER, (i2c_address >> 1), register_packet, 2, data, length, TIME_MS2I(timeout));
+ msg_t status = i2cMasterTransmitTimeout(&I2C_DRIVER, (devaddr >> 1), register_packet, 2, data, length, TIME_MS2I(timeout));
return i2c_epilogue(status);
}
-void i2c_stop(void) {
- i2cStop(&I2C_DRIVER);
-}
+__attribute__((weak)) i2c_status_t i2c_ping_address(uint8_t address, uint16_t timeout) {
+ // ChibiOS does not provide low level enough control to check for an ack.
+ // Best effort instead tries reading register 0 which will either succeed or timeout.
+ // This approach may produce false negative results for I2C devices that do not respond to a register 0 read request.
+ uint8_t data = 0;
+ return i2c_readReg(address, 0, &data, sizeof(data), timeout);
+}
\ No newline at end of file
diff --git a/platforms/chibios/drivers/i2c_master.h b/platforms/chibios/drivers/i2c_master.h
index 5f16367831..132ffd14c0 100644
--- a/platforms/chibios/drivers/i2c_master.h
+++ b/platforms/chibios/drivers/i2c_master.h
@@ -40,11 +40,10 @@ typedef int16_t i2c_status_t;
#define I2C_STATUS_TIMEOUT (-2)
void i2c_init(void);
-i2c_status_t i2c_start(uint8_t address);
i2c_status_t i2c_transmit(uint8_t address, const uint8_t* data, uint16_t length, uint16_t timeout);
i2c_status_t i2c_receive(uint8_t address, uint8_t* data, uint16_t length, uint16_t timeout);
i2c_status_t i2c_write_register(uint8_t devaddr, uint8_t regaddr, const uint8_t* data, uint16_t length, uint16_t timeout);
i2c_status_t i2c_write_register16(uint8_t devaddr, uint16_t regaddr, const uint8_t* data, uint16_t length, uint16_t timeout);
i2c_status_t i2c_read_register(uint8_t devaddr, uint8_t regaddr, uint8_t* data, uint16_t length, uint16_t timeout);
i2c_status_t i2c_read_register16(uint8_t devaddr, uint16_t regaddr, uint8_t* data, uint16_t length, uint16_t timeout);
-void i2c_stop(void);
+i2c_status_t i2c_ping_address(uint8_t address, uint16_t timeout);