mirror of https://github.com/commaai/panda.git
140 lines
4.0 KiB
C
140 lines
4.0 KiB
C
// CAN msgs we care about
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#define MAZDA_LKAS 0x243
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#define MAZDA_LKAS_HUD 0x440
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#define MAZDA_CRZ_CTRL 0x21c
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#define MAZDA_CRZ_BTNS 0x09d
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#define MAZDA_STEER_TORQUE 0x240
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#define MAZDA_ENGINE_DATA 0x202
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#define MAZDA_PEDALS 0x165
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// CAN bus numbers
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#define MAZDA_MAIN 0
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#define MAZDA_AUX 1
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#define MAZDA_CAM 2
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const SteeringLimits MAZDA_STEERING_LIMITS = {
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.max_steer = 800,
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.max_rate_up = 10,
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.max_rate_down = 25,
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.max_rt_delta = 300,
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.max_rt_interval = 250000,
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.driver_torque_factor = 1,
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.driver_torque_allowance = 15,
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.type = TorqueDriverLimited,
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};
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const CanMsg MAZDA_TX_MSGS[] = {{MAZDA_LKAS, 0, 8}, {MAZDA_CRZ_BTNS, 0, 8}, {MAZDA_LKAS_HUD, 0, 8}};
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AddrCheckStruct mazda_addr_checks[] = {
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{.msg = {{MAZDA_CRZ_CTRL, 0, 8, .expected_timestep = 20000U}, { 0 }, { 0 }}},
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{.msg = {{MAZDA_CRZ_BTNS, 0, 8, .expected_timestep = 100000U}, { 0 }, { 0 }}},
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{.msg = {{MAZDA_STEER_TORQUE, 0, 8, .expected_timestep = 12000U}, { 0 }, { 0 }}},
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{.msg = {{MAZDA_ENGINE_DATA, 0, 8, .expected_timestep = 10000U}, { 0 }, { 0 }}},
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{.msg = {{MAZDA_PEDALS, 0, 8, .expected_timestep = 20000U}, { 0 }, { 0 }}},
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};
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#define MAZDA_ADDR_CHECKS_LEN (sizeof(mazda_addr_checks) / sizeof(mazda_addr_checks[0]))
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addr_checks mazda_rx_checks = {mazda_addr_checks, MAZDA_ADDR_CHECKS_LEN};
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// track msgs coming from OP so that we know what CAM msgs to drop and what to forward
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static int mazda_rx_hook(CANPacket_t *to_push) {
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bool valid = addr_safety_check(to_push, &mazda_rx_checks, NULL, NULL, NULL, NULL);
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if (valid && ((int)GET_BUS(to_push) == MAZDA_MAIN)) {
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int addr = GET_ADDR(to_push);
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if (addr == MAZDA_ENGINE_DATA) {
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// sample speed: scale by 0.01 to get kph
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int speed = (GET_BYTE(to_push, 2) << 8) | GET_BYTE(to_push, 3);
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vehicle_moving = speed > 10; // moving when speed > 0.1 kph
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}
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if (addr == MAZDA_STEER_TORQUE) {
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int torque_driver_new = GET_BYTE(to_push, 0) - 127U;
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// update array of samples
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update_sample(&torque_driver, torque_driver_new);
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}
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// enter controls on rising edge of ACC, exit controls on ACC off
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if (addr == MAZDA_CRZ_CTRL) {
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bool cruise_engaged = GET_BYTE(to_push, 0) & 0x8U;
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pcm_cruise_check(cruise_engaged);
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}
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if (addr == MAZDA_ENGINE_DATA) {
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gas_pressed = (GET_BYTE(to_push, 4) || (GET_BYTE(to_push, 5) & 0xF0U));
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}
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if (addr == MAZDA_PEDALS) {
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brake_pressed = (GET_BYTE(to_push, 0) & 0x10U);
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}
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generic_rx_checks((addr == MAZDA_LKAS));
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}
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return valid;
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}
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static int mazda_tx_hook(CANPacket_t *to_send) {
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int tx = 1;
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int addr = GET_ADDR(to_send);
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int bus = GET_BUS(to_send);
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if (!msg_allowed(to_send, MAZDA_TX_MSGS, sizeof(MAZDA_TX_MSGS)/sizeof(MAZDA_TX_MSGS[0]))) {
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tx = 0;
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}
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// Check if msg is sent on the main BUS
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if (bus == MAZDA_MAIN) {
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// steer cmd checks
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if (addr == MAZDA_LKAS) {
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int desired_torque = (((GET_BYTE(to_send, 0) & 0x0FU) << 8) | GET_BYTE(to_send, 1)) - 2048U;
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if (steer_torque_cmd_checks(desired_torque, -1, MAZDA_STEERING_LIMITS)) {
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tx = 0;
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}
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}
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// cruise buttons check
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if (addr == MAZDA_CRZ_BTNS) {
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// allow resume spamming while controls allowed, but
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// only allow cancel while contrls not allowed
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bool cancel_cmd = (GET_BYTE(to_send, 0) == 0x1U);
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if (!controls_allowed && !cancel_cmd) {
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tx = 0;
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}
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}
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}
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return tx;
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}
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static int mazda_fwd_hook(int bus, int addr) {
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int bus_fwd = -1;
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if (bus == MAZDA_MAIN) {
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bus_fwd = MAZDA_CAM;
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} else if (bus == MAZDA_CAM) {
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bool block = (addr == MAZDA_LKAS) || (addr == MAZDA_LKAS_HUD);
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if (!block) {
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bus_fwd = MAZDA_MAIN;
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}
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} else {
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// don't fwd
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}
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return bus_fwd;
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}
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static const addr_checks* mazda_init(uint16_t param) {
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UNUSED(param);
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return &mazda_rx_checks;
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}
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const safety_hooks mazda_hooks = {
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.init = mazda_init,
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.rx = mazda_rx_hook,
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.tx = mazda_tx_hook,
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.tx_lin = nooutput_tx_lin_hook,
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.fwd = mazda_fwd_hook,
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};
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