start work on canflasher

Author: geohot

board/bootstub.c

@@ -24,6 +24,12 @@
 #include "drivers/usb.h"
 //#include "drivers/uart.h"
 
+#ifdef PEDAL
+#define CUSTOM_CAN_INTERRUPTS
+#include "safety.h"
+#include "drivers/can.h"
+#endif
+
 int puts(const char *a) { return 0; }
 void puth(unsigned int i) {}
 

board/pedal/Makefile

@@ -18,6 +18,9 @@ DFU_UTIL = "dfu-util"
 CERT = ../../certs/debug
 CFLAGS += "-DALLOW_DEBUG"
 
+canflash: obj/$(PROJ_NAME).bin
+	../../tests/pedal/enter_canloader.py $<
+
 usbflash: obj/$(PROJ_NAME).bin
 	../../tests/pedal/enter_canloader.py; sleep 0.5
 	PYTHONPATH=../../ python -c "from python import Panda; p = [x for x in [Panda(x) for x in Panda.list()] if x.bootstub]; assert(len(p)==1); p[0].flash('obj/$(PROJ_NAME).bin', reconnect=False)"

board/pedal/main.c

@@ -264,7 +264,7 @@ int main() {
 
   // init can
   can_silent = ALL_CAN_LIVE;
-  can_init_all();
+  can_init(0);
 
   // 48mhz / 65536 ~= 732
   timer_init(TIM3, 15);

board/spi_flasher.h

@@ -130,6 +130,35 @@ int spi_cb_rx(uint8_t *data, int len, uint8_t *data_out) {
   return resp_len;
 }
 
+#ifdef PEDAL
+
+#define CAN CAN1
+
+#define CAN_BL_INPUT 0x1
+#define CAN_BL_OUTPUT 0x2
+
+void CAN1_TX_IRQHandler() {
+  // clear interrupt
+  CAN->TSR |= CAN_TSR_RQCP0;
+}
+
+void CAN1_RX0_IRQHandler() {
+  while (CAN->RF0R & CAN_RF0R_FMP0) {
+    if ((CAN->sFIFOMailBox[0].RIR>>21) == CAN_BL_INPUT) {
+      CAN->sTxMailBox[0].TDLR = 0xAABBCCDD;
+      CAN->sTxMailBox[0].TDHR = 0xAABBCCDD;
+      CAN->sTxMailBox[0].TDTR = 8;
+      CAN->sTxMailBox[0].TIR = (CAN_BL_OUTPUT << 21) | 1;
+    }
+  }
+}
+
+void CAN1_SCE_IRQHandler() {
+  can_sce(CAN);
+}
+
+#endif
+
 void soft_flasher_start() {
   puts("\n\n\n************************ FLASHER START ************************\n");
 
@@ -140,6 +169,25 @@ void soft_flasher_start() {
   RCC->AHB2ENR |= RCC_AHB2ENR_OTGFSEN;
   RCC->APB1ENR |= RCC_APB1ENR_USART2EN;
 
+// pedal has the canloader
+#ifdef PEDAL
+  RCC->APB1ENR |= RCC_APB1ENR_CAN1EN;
+
+  // B8,B9: CAN 1
+  set_gpio_alternate(GPIOB, 8, GPIO_AF9_CAN1);
+  set_gpio_alternate(GPIOB, 9, GPIO_AF9_CAN1);
+  set_can_enable(CAN1, 1);
+
+  // init can
+  can_silent = ALL_CAN_LIVE;
+  can_init(0);
+
+  // needed?
+  NVIC_EnableIRQ(CAN1_TX_IRQn);
+  NVIC_EnableIRQ(CAN1_RX0_IRQn);
+  NVIC_EnableIRQ(CAN1_SCE_IRQn);
+#endif
+
   // A4,A5,A6,A7: setup SPI
   set_gpio_alternate(GPIOA, 4, GPIO_AF5_SPI1);
   set_gpio_alternate(GPIOA, 5, GPIO_AF5_SPI1);

tests/pedal/enter_canloader.py

@@ -6,13 +6,20 @@
 if __name__ == "__main__":
   parser = argparse.ArgumentParser(description='Flash pedal over can')
   parser.add_argument('--recover', action='store_true')
+  parser.add_argument("fn", type=str, nargs='?', help="flash file")
   args = parser.parse_args()
 
   p = Panda()
   p.set_safety_mode(0x1337)
 
   if args.recover:
     p.can_send(0x200, "\xce\xfa\xad\xde\x1e\x0b\xb0\x02", 0)
+    exit(0)
   else:
     p.can_send(0x200, "\xce\xfa\xad\xde\x1e\x0b\xb0\x0a", 0)
 
+  if args.fn:
+    print "flashing", args.fn
+
+
+