panda/board/power_saving.h

60 lines
1.8 KiB
C

// WARNING: To stay in compliance with the SIL2 rules laid out in STM UM1840, we should never implement any of the available hardware low power modes.
// See rule: CoU_3
#define POWER_SAVE_STATUS_DISABLED 0
#define POWER_SAVE_STATUS_ENABLED 1
int power_save_status = POWER_SAVE_STATUS_DISABLED;
void set_power_save_state(int state) {
bool is_valid_state = (state == POWER_SAVE_STATUS_ENABLED) || (state == POWER_SAVE_STATUS_DISABLED);
if (is_valid_state && (state != power_save_status)) {
bool enable = false;
if (state == POWER_SAVE_STATUS_ENABLED) {
puts("enable power savings\n");
if (board_has_gps()) {
char UBLOX_SLEEP_MSG[] = "\xb5\x62\x06\x04\x04\x00\x01\x00\x08\x00\x17\x78";
uart_ring *ur = get_ring_by_number(1);
for (unsigned int i = 0; i < sizeof(UBLOX_SLEEP_MSG) - 1U; i++) while (!putc(ur, UBLOX_SLEEP_MSG[i]));
}
} else {
puts("disable power savings\n");
if (board_has_gps()) {
char UBLOX_WAKE_MSG[] = "\xb5\x62\x06\x04\x04\x00\x01\x00\x09\x00\x18\x7a";
uart_ring *ur = get_ring_by_number(1);
for (unsigned int i = 0; i < sizeof(UBLOX_WAKE_MSG) - 1U; i++) while (!putc(ur, UBLOX_WAKE_MSG[i]));
}
enable = true;
}
current_board->enable_can_transcievers(enable);
// Switch EPS/GPS
if (enable) {
current_board->set_esp_gps_mode(ESP_GPS_ENABLED);
} else {
current_board->set_esp_gps_mode(ESP_GPS_DISABLED);
}
if(board_has_gmlan()){
// turn on GMLAN
set_gpio_output(GPIOB, 14, enable);
set_gpio_output(GPIOB, 15, enable);
}
if(board_has_lin()){
// turn on LIN
set_gpio_output(GPIOB, 7, enable);
set_gpio_output(GPIOA, 14, enable);
}
// Switch off IR when in power saving
if(!enable){
current_board->set_ir_power(0U);
}
power_save_status = state;
}
}