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