56 lines
1.1 KiB
C
56 lines
1.1 KiB
C
#include <stdbool.h>
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#include "ps2_io.h"
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// chibiOS headers
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#include "ch.h"
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#include "hal.h"
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/* Check port settings for clock and data line */
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#if !(defined(PS2_CLOCK_PIN))
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# error "PS/2 clock setting is required in config.h"
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#endif
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#if !(defined(PS2_DATA_PIN))
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# error "PS/2 data setting is required in config.h"
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#endif
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/*
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* Clock
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*/
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void clock_init(void) {}
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void clock_lo(void) {
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palSetLineMode(PS2_CLOCK_PIN, PAL_MODE_OUTPUT_OPENDRAIN);
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palWriteLine(PS2_CLOCK_PIN, PAL_LOW);
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}
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void clock_hi(void) {
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palSetLineMode(PS2_CLOCK_PIN, PAL_MODE_OUTPUT_OPENDRAIN);
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palWriteLine(PS2_CLOCK_PIN, PAL_HIGH);
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}
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bool clock_in(void) {
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palSetLineMode(PS2_CLOCK_PIN, PAL_MODE_INPUT);
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return palReadLine(PS2_CLOCK_PIN);
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}
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/*
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* Data
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*/
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void data_init(void) {}
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void data_lo(void) {
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palSetLineMode(PS2_DATA_PIN, PAL_MODE_OUTPUT_OPENDRAIN);
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palWriteLine(PS2_DATA_PIN, PAL_LOW);
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}
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void data_hi(void) {
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palSetLineMode(PS2_DATA_PIN, PAL_MODE_OUTPUT_OPENDRAIN);
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palWriteLine(PS2_DATA_PIN, PAL_HIGH);
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}
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bool data_in(void) {
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palSetLineMode(PS2_DATA_PIN, PAL_MODE_INPUT);
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return palReadLine(PS2_DATA_PIN);
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}
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