mirror of https://github.com/rusefi/rusefi.git
52 lines
1.1 KiB
C++
52 lines
1.1 KiB
C++
/**
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* can_gpio.cpp
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*/
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#include "pch.h"
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#include "gpio/gpio_ext.h"
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#include "can_gpio.h"
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#if EFI_CAN_GPIO
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static SEMAPHORE_DECL(wakeSemaphore, 3 /* todo: is that right number? probably not. */);
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static THD_WORKING_AREA(canGpio_thread_1_wa, 256);
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struct CanOutputs : public GpioChip {
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uint8_t state[4];
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CanOutputs() {
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memset(&state, 0, sizeof(state));
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}
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void wakeThread() {
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/* Entering a reentrant critical zone.*/
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chibios_rt::CriticalSectionLocker csl;
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chSemSignalI(&wakeSemaphore);
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}
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/* pin argument is pin number within gpio chip, not a global number */
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int writePad(size_t pin, int value) override {
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state[pin] = value;
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wakeThread();
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return 0;
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}
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};
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static THD_FUNCTION(canGpio_driver_thread, p) {
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(void)p;
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chRegSetThreadName("CanGpio");
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while (1) {
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chSemWaitTimeout(&wakeSemaphore, TIME_MS2I(1200 /*random number, ms*/));
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}
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}
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void initCanGpio() {
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// CAN_PIN_0
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chThdCreateStatic(canGpio_thread_1_wa, sizeof(canGpio_thread_1_wa),
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PRIO_GPIOCHIP, canGpio_driver_thread, NULL);
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}
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#endif // EFI_CAN_GPIO
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