Cadillac: simpler ignition logic

board/safety/safety_cadillac.h

@@ -1,10 +1,28 @@
+int cadillac_ignition_started = 0;
+
+static void cadillac_rx_hook(CAN_FIFOMailBox_TypeDef *to_push) {
+  int bus_number = (to_push->RDTR >> 4) & 0xFF;
+  uint32_t addr = to_push->RIR >> 21;
+
+  if (addr == 0x135 && bus_number == 0) {
+    cadillac_ignition_started = 1; //as soona s we receive can msgs, ingition is on
+  }
+}
+
+static void cadillac_init(int16_t param) {
+  cadillac_ignition_started = 0;
+}
+
+static int cadillac_ign_hook() {
+  return cadillac_ignition_started;
+}
+
 // Placeholder file, actual safety is TODO.
 const safety_hooks cadillac_hooks = {
-  .init = alloutput_init,
-  .rx = default_rx_hook,
+  .init = cadillac_init,
+  .rx = cadillac_rx_hook,
   .tx = alloutput_tx_hook,
   .tx_lin = alloutput_tx_lin_hook,
-  .ignition = alloutput_ign_hook,
+  .ignition = cadillac_ign_hook,
   .fwd = alloutput_fwd_hook,
 };
-