Squashed 'panda/' changes from 2573d86..b42db6d

b42db6d Merge pull request #82 from commaai/uart_dma
fd68f86 smallr
be99ffc ok that doesn't hurt i think
a9f6bf0 this
8b7e849 working now
7fa4808 froze up, maybe thats the fix
1465aa4 ok, it's fixed
915cd84 ugh, ok, need that
fd05376 comment out debug
37c5263 big fifo
497f069 dma is all critical, no interrupts
7c34afe minor change
743d244 high baud rate works
5d2a4ba v1.0.6
fbf1390 Toyota Safety: fix in input param
6c01d09 Toyota: less torque error allowance to meet Corolla acceptable behavior
07c01b2 Toyota safety: using input param
4410a59 add safety param support
fc81fc1 uart dma in progress
65fb2b2 grey panda query, 1.0.5
f415c9a grey panda detection
b68957e add pandadebug support
b5e4962 leave msgs around in isotp
0acce2d add recvaddr support
3fc38f4 set bootmode with power
d4c052a make that work
21f8195 fix panda serial write
af74aa9 from python import

git-subtree-dir: panda
git-subtree-split: b42db6d

VERSION

@@ -1 +1 @@
-v1.0.4
+v1.0.6

board/build.mk

@@ -17,7 +17,7 @@ DFU_UTIL = "dfu-util"
 
 # this no longer pushes the bootstub
 flash: obj/$(PROJ_NAME).bin
-	PYTHONPATH=../ python -c "from panda import Panda; Panda().flash('obj/$(PROJ_NAME).bin')"
+	PYTHONPATH=../ python -c "from python import Panda; Panda().flash('obj/$(PROJ_NAME).bin')"
 
 ota: obj/$(PROJ_NAME).bin
 	curl http://192.168.0.10/stupdate --upload-file $<
@@ -26,7 +26,7 @@ bin: obj/$(PROJ_NAME).bin
 
 # this flashes everything
 recover: obj/bootstub.$(PROJ_NAME).bin obj/$(PROJ_NAME).bin
-	-PYTHONPATH=../ python -c "from panda import Panda; Panda().reset(enter_bootloader=True)"
+	-PYTHONPATH=../ python -c "from python import Panda; Panda().reset(enter_bootloader=True)"
 	sleep 1.0
 	$(DFU_UTIL) -d 0483:df11 -a 0 -s 0x08004000 -D obj/$(PROJ_NAME).bin
 	$(DFU_UTIL) -d 0483:df11 -a 0 -s 0x08000000:leave -D obj/bootstub.$(PROJ_NAME).bin

board/drivers/drivers.h

@@ -57,13 +57,13 @@ void usb_cb_enumeration_complete();
 // ********************* UART *********************
 // IRQs: USART1, USART2, USART3, UART5
 
-#define FIFO_SIZE 0x100
+#define FIFO_SIZE 0x400
 typedef struct uart_ring {
-  uint8_t w_ptr_tx;
-  uint8_t r_ptr_tx;
+  uint16_t w_ptr_tx;
+  uint16_t r_ptr_tx;
   uint8_t elems_tx[FIFO_SIZE];
-  uint8_t w_ptr_rx;
-  uint8_t r_ptr_rx;
+  uint16_t w_ptr_rx;
+  uint16_t r_ptr_rx;
   uint8_t elems_rx[FIFO_SIZE];
   USART_TypeDef *uart;
   void (*callback)(struct uart_ring*);

board/drivers/uart.h

@@ -52,7 +52,7 @@ void uart_ring_process(uart_ring *q) {
   if (q->w_ptr_tx != q->r_ptr_tx) {
     if (sr & USART_SR_TXE) {
       q->uart->DR = q->elems_tx[q->r_ptr_tx];
-      q->r_ptr_tx += 1;
+      q->r_ptr_tx = (q->r_ptr_tx + 1) % FIFO_SIZE;
     } else {
       // push on interrupt later
       q->uart->CR1 |= USART_CR1_TXEIE;
@@ -64,11 +64,13 @@ void uart_ring_process(uart_ring *q) {
 
   if (sr & USART_SR_RXNE || sr & USART_SR_ORE) {
     uint8_t c = q->uart->DR;  // TODO: can drop packets
-    uint8_t next_w_ptr = q->w_ptr_rx + 1;
-    if (next_w_ptr != q->r_ptr_rx) {
-      q->elems_rx[q->w_ptr_rx] = c;
-      q->w_ptr_rx = next_w_ptr;
-      if (q->callback) q->callback(q);
+    if (q != &esp_ring) {
+      uint16_t next_w_ptr = (q->w_ptr_rx + 1) % FIFO_SIZE;
+      if (next_w_ptr != q->r_ptr_rx) {
+        q->elems_rx[q->w_ptr_rx] = c;
+        q->w_ptr_rx = next_w_ptr;
+        if (q->callback) q->callback(q);
+      }
     }
   }
 
@@ -92,7 +94,7 @@ int getc(uart_ring *q, char *elem) {
   enter_critical_section();
   if (q->w_ptr_rx != q->r_ptr_rx) {
     *elem = q->elems_rx[q->r_ptr_rx];
-    q->r_ptr_rx += 1;
+    q->r_ptr_rx = (q->r_ptr_rx + 1) % FIFO_SIZE;
     ret = 1;
   }
   exit_critical_section();
@@ -102,10 +104,10 @@ int getc(uart_ring *q, char *elem) {
 
 int injectc(uart_ring *q, char elem) {
   int ret = 0;
-  uint8_t next_w_ptr;
+  uint16_t next_w_ptr;
 
   enter_critical_section();
-  next_w_ptr = q->w_ptr_rx + 1;
+  next_w_ptr = (q->w_ptr_rx + 1) % FIFO_SIZE;
   if (next_w_ptr != q->r_ptr_rx) {
     q->elems_rx[q->w_ptr_rx] = elem;
     q->w_ptr_rx = next_w_ptr;
@@ -118,10 +120,10 @@ int injectc(uart_ring *q, char elem) {
 
 int putc(uart_ring *q, char elem) {
   int ret = 0;
-  uint8_t next_w_ptr;
+  uint16_t next_w_ptr;
 
   enter_critical_section();
-  next_w_ptr = q->w_ptr_tx + 1;
+  next_w_ptr = (q->w_ptr_tx + 1) % FIFO_SIZE;
   if (next_w_ptr != q->r_ptr_tx) {
     q->elems_tx[q->w_ptr_tx] = elem;
     q->w_ptr_tx = next_w_ptr;
@@ -159,6 +161,51 @@ void uart_set_baud(USART_TypeDef *u, int baud) {
   }
 }
 
+#define USART1_DMA_LEN 0x20
+char usart1_dma[USART1_DMA_LEN];
+
+void uart_dma_drain() {
+  uart_ring *q = &esp_ring;
+
+  enter_critical_section();
+
+  if (DMA2->HISR & DMA_HISR_TCIF5 || DMA2->HISR & DMA_HISR_HTIF5 || DMA2_Stream5->NDTR != USART1_DMA_LEN) {
+    // disable DMA
+    q->uart->CR3 &= ~USART_CR3_DMAR;
+    DMA2_Stream5->CR &= ~DMA_SxCR_EN;
+    while (DMA2_Stream5->CR & DMA_SxCR_EN);
+
+    int i;
+    for (i = 0; i < USART1_DMA_LEN - DMA2_Stream5->NDTR; i++) {
+      char c = usart1_dma[i];
+      uint16_t next_w_ptr = (q->w_ptr_rx + 1) % FIFO_SIZE;
+      if (next_w_ptr != q->r_ptr_rx) {
+        q->elems_rx[q->w_ptr_rx] = c;
+        q->w_ptr_rx = next_w_ptr;
+      }
+    }
+
+    // reset DMA len
+    DMA2_Stream5->NDTR = USART1_DMA_LEN;
+
+    // clear interrupts
+    DMA2->HIFCR = DMA_HIFCR_CTCIF5 | DMA_HIFCR_CHTIF5;
+    //DMA2->HIFCR = DMA_HIFCR_CTEIF5 | DMA_HIFCR_CDMEIF5 | DMA_HIFCR_CFEIF5;
+
+    // enable DMA
+    DMA2_Stream5->CR |= DMA_SxCR_EN;
+    q->uart->CR3 |= USART_CR3_DMAR;
+  }
+
+  exit_critical_section();
+}
+
+void DMA2_Stream5_IRQHandler(void) {
+  //set_led(LED_BLUE, 1);
+  uart_dma_drain();
+  //set_led(LED_BLUE, 0);
+}
+
 void uart_init(USART_TypeDef *u, int baud) {
   // enable uart and tx+rx mode
   u->CR1 = USART_CR1_UE;
@@ -170,9 +217,23 @@ void uart_init(USART_TypeDef *u, int baud) {
   // ** UART is ready to work **
 
   // enable interrupts
-  u->CR1 |= USART_CR1_RXNEIE;
+  if (u != USART1) {
+    u->CR1 |= USART_CR1_RXNEIE;
+  }
 
   if (u == USART1) {
+    // DMA2, stream 2, channel 3
+    DMA2_Stream5->M0AR = (uint32_t)usart1_dma;
+    DMA2_Stream5->NDTR = USART1_DMA_LEN;
+    DMA2_Stream5->PAR = (uint32_t)&(USART1->DR);
+
+    // channel4, increment memory, periph -> memory, enable
+    DMA2_Stream5->CR = DMA_SxCR_CHSEL_2 | DMA_SxCR_MINC | DMA_SxCR_HTIE | DMA_SxCR_TCIE | DMA_SxCR_EN;
+
+    // this one uses DMA receiver
+    u->CR3 = USART_CR3_DMAR;
+
+    NVIC_EnableIRQ(DMA2_Stream5_IRQn);
     NVIC_EnableIRQ(USART1_IRQn);
   } else if (u == USART2) {
     NVIC_EnableIRQ(USART2_IRQn);

board/gpio.h

@@ -15,6 +15,7 @@ int has_external_debug_serial = 0;
 int is_giant_panda = 0;
 int is_entering_bootmode = 0;
 int revision = PANDA_REV_AB;
+int is_grey_panda = 0;
 
 int detect_with_pull(GPIO_TypeDef *GPIO, int pin, int mode) {
   set_gpio_mode(GPIO, pin, MODE_INPUT);
@@ -45,9 +46,14 @@ void detect() {
 
   // check if the ESP is trying to put me in boot mode
   is_entering_bootmode = !detect_with_pull(GPIOB, 0, PULL_UP);
+
+  // check if it's a grey panda by seeing if the SPI lines are floating
+  // TODO: is this reliable?
+  is_grey_panda = !(detect_with_pull(GPIOA, 4, PULL_DOWN) | detect_with_pull(GPIOA, 5, PULL_DOWN) | detect_with_pull(GPIOA, 6, PULL_DOWN) | detect_with_pull(GPIOA, 7, PULL_DOWN));
 #else
   // need to do this for early detect
   is_giant_panda = 0;
+  is_grey_panda = 0;
   revision = PANDA_REV_AB;
   is_entering_bootmode = 0;
 #endif

board/main.c

@@ -175,6 +175,11 @@ int usb_cb_control_msg(USB_Setup_TypeDef *setup, uint8_t *resp, int hardwired) {
       puts(" err: "); puth(can_err_cnt);
       puts("\n");
       break;
+    // **** 0xc1: is grey panda
+    case 0xc1:
+      resp[0] = is_grey_panda;
+      resp_len = 1;
+      break;
     // **** 0xd0: fetch serial number
     case 0xd0:
       #ifdef PANDA
@@ -229,6 +234,8 @@ int usb_cb_control_msg(USB_Setup_TypeDef *setup, uint8_t *resp, int hardwired) {
     case 0xd9:
       if (setup->b.wValue.w == 1) {
         set_esp_mode(ESP_ENABLED);
+      } else if (setup->b.wValue.w == 2) {
+        set_esp_mode(ESP_BOOTMODE);
       } else {
         set_esp_mode(ESP_DISABLED);
       }
@@ -267,7 +274,7 @@ int usb_cb_control_msg(USB_Setup_TypeDef *setup, uint8_t *resp, int hardwired) {
       // and it's blocked over WiFi
       // Allow ELM security mode to be set over wifi.
       if (hardwired || setup->b.wValue.w == SAFETY_NOOUTPUT || setup->b.wValue.w == SAFETY_ELM327) {
-        safety_set_mode(setup->b.wValue.w);
+        safety_set_mode(setup->b.wValue.w, (int16_t)setup->b.wIndex.w);
         switch (setup->b.wValue.w) {
           case SAFETY_NOOUTPUT:
             can_silent = ALL_CAN_SILENT;
@@ -304,6 +311,7 @@ int usb_cb_control_msg(USB_Setup_TypeDef *setup, uint8_t *resp, int hardwired) {
     case 0xe0:
       ur = get_ring_by_number(setup->b.wValue.w);
       if (!ur) break;
+      if (ur == &esp_ring) uart_dma_drain();
       // read
       while ((resp_len < min(setup->b.wLength.w, MAX_RESP_LEN)) &&
                          getc(ur, (char*)&resp[resp_len])) {
@@ -489,6 +497,7 @@ int main() {
   #endif
   puts(has_external_debug_serial ? "  real serial\n" : "  USB serial\n");
   puts(is_giant_panda ? "  GIANTpanda detected\n" : "  not GIANTpanda\n");
+  puts(is_grey_panda ? "  gray panda detected!\n" : "  white panda\n");
   puts(is_entering_bootmode ? "  ESP wants bootmode\n" : "  no bootmode\n");
   gpio_init();
 
@@ -500,9 +509,12 @@ int main() {
   }
 
 #ifdef PANDA
-  // enable ESP uart
-  uart_init(USART1, 115200);
-
+  if (is_grey_panda) {
+    uart_init(USART1, 9600);
+  } else {
+    // enable ESP uart
+    uart_init(USART1, 115200);
+  }
   // enable LIN
   uart_init(UART5, 10400);
   UART5->CR2 |= USART_CR2_LINEN;
@@ -522,7 +534,7 @@ int main() {
   usb_init();
 
   // default to silent mode to prevent issues with Ford
-  safety_set_mode(SAFETY_NOOUTPUT);
+  safety_set_mode(SAFETY_NOOUTPUT, 0);
   can_silent = ALL_CAN_SILENT;
   can_init_all();
 
@@ -552,6 +564,8 @@ int main() {
   for (cnt=0;;cnt++) {
     can_live = pending_can_live;
 
+    //puth(usart1_dma); puts(" "); puth(DMA2_Stream5->M0AR); puts(" "); puth(DMA2_Stream5->NDTR); puts("\n");
+
     #ifdef PANDA
       int current = adc_get(ADCCHAN_CURRENT);
 

board/safety.h

@@ -2,7 +2,7 @@ void safety_rx_hook(CAN_FIFOMailBox_TypeDef *to_push);
 int safety_tx_hook(CAN_FIFOMailBox_TypeDef *to_send);
 int safety_tx_lin_hook(int lin_num, uint8_t *data, int len);
 
-typedef void (*safety_hook_init)();
+typedef void (*safety_hook_init)(int16_t param);
 typedef void (*rx_hook)(CAN_FIFOMailBox_TypeDef *to_push);
 typedef int (*tx_hook)(CAN_FIFOMailBox_TypeDef *to_send);
 typedef int (*tx_lin_hook)(int lin_num, uint8_t *data, int len);
@@ -60,11 +60,11 @@ const safety_hook_config safety_hook_registry[] = {
 
 #define HOOK_CONFIG_COUNT (sizeof(safety_hook_registry)/sizeof(safety_hook_config))
 
-int safety_set_mode(uint16_t mode) {
+int safety_set_mode(uint16_t mode, int16_t param) {
   for (int i = 0; i < HOOK_CONFIG_COUNT; i++) {
     if (safety_hook_registry[i].id == mode) {
       current_hooks = safety_hook_registry[i].hooks;
-      if (current_hooks->init) current_hooks->init();
+      if (current_hooks->init) current_hooks->init(param);
       return 0;
     }
   }

board/safety/safety_defaults.h

@@ -2,7 +2,7 @@ void default_rx_hook(CAN_FIFOMailBox_TypeDef *to_push) {}
 
 // *** no output safety mode ***
 
-static void nooutput_init() {
+static void nooutput_init(int16_t param) {
   controls_allowed = 0;
 }
 
@@ -23,7 +23,7 @@ const safety_hooks nooutput_hooks = {
 
 // *** all output safety mode ***
 
-static void alloutput_init() {
+static void alloutput_init(int16_t param) {
   controls_allowed = 1;
 }
 

board/safety/safety_elm327.h

@@ -27,7 +27,7 @@ static int elm327_tx_lin_hook(int lin_num, uint8_t *data, int len) {
   return true;
 }
 
-static void elm327_init() {
+static void elm327_init(int16_t param) {
   controls_allowed = 1;
 }
 

board/safety/safety_honda.h

@@ -115,7 +115,7 @@ static int honda_tx_lin_hook(int lin_num, uint8_t *data, int len) {
   return true;
 }
 
-static void honda_init() {
+static void honda_init(int16_t param) {
   controls_allowed = 0;
 }
 

board/safety/safety_toyota.h

@@ -9,7 +9,7 @@ const int32_t MAX_TORQUE = 1500;       // max torque cmd allowed ever
 // packet is sent at 100hz, so this limit is 1000/sec
 const int32_t MAX_RATE_UP = 10;        // ramp up slow
 const int32_t MAX_RATE_DOWN = 25;      // ramp down fast
-const int32_t MAX_TORQUE_ERROR = 500;  // max torque cmd in excess of torque motor
+const int32_t MAX_TORQUE_ERROR = 350;  // max torque cmd in excess of torque motor
 
 // real time torque limit to prevent controls spamming
 // the real time limit is 1500/sec
@@ -22,6 +22,7 @@ const int16_t MIN_ACCEL = -3000;       // 3.0 m/s2
 
 // global actuation limit state
 int actuation_limits = 1;              // by default steer limits are imposed
+int16_t dbc_eps_torque_factor = 100;   // conversion factor for STEER_TORQUE_EPS in %: see dbc file
 
 // state of torque limits
 int16_t desired_torque_last = 0;       // last desired steer torque
@@ -31,10 +32,10 @@ uint32_t ts_last = 0;
 static void toyota_rx_hook(CAN_FIFOMailBox_TypeDef *to_push) {
   // get eps motor torque (0.66 factor in dbc)
   if ((to_push->RIR>>21) == 0x260) {
-    int16_t torque_meas_new = (((to_push->RDHR) & 0xFF00) | ((to_push->RDHR >> 16) & 0xFF));
+    int torque_meas_new = (((to_push->RDHR) & 0xFF00) | ((to_push->RDHR >> 16) & 0xFF));
 
     // increase torque_meas by 1 to be conservative on rounding
-    torque_meas_new = (torque_meas_new / 3 + (torque_meas_new > 0 ? 1 : -1)) * 2;
+    torque_meas_new = (torque_meas_new * dbc_eps_torque_factor / 100) + (torque_meas_new > 0 ? 1 : -1);
 
     // shift the array
     for (int i = sizeof(torque_meas)/sizeof(torque_meas[0]) - 1; i > 0; i--) {
@@ -154,9 +155,10 @@ static int toyota_tx_lin_hook(int lin_num, uint8_t *data, int len) {
   return true;
 }
 
-static void toyota_init() {
+static void toyota_init(int16_t param) {
   controls_allowed = 0;
   actuation_limits = 1;
+  dbc_eps_torque_factor = param;
 }
 
 const safety_hooks toyota_hooks = {
@@ -166,9 +168,10 @@ const safety_hooks toyota_hooks = {
   .tx_lin = toyota_tx_lin_hook,
 };
 
-static void toyota_nolimits_init() {
+static void toyota_nolimits_init(int16_t param) {
   controls_allowed = 0;
   actuation_limits = 0;
+  dbc_eps_torque_factor = param;
 }
 
 const safety_hooks toyota_nolimits_hooks = {