only try to detect double reset when reset by nRST

Makefile

@@ -124,13 +124,14 @@ endif
 #------------------------------------------------------------------------------
 
 # all files in src
-C_SRC += $(wildcard src/*.c)
+C_SRC += \
+  src/dfu_ble_svc.c \
+  src/dfu_init.c \
+  src/flash_nrf5x.c \
+  src/main.c \
 
 # all files in boards
-C_SRC += $(wildcard src/boards/*.c)
-
-# all sources files in specific board
-C_SRC += $(wildcard src/boards/$(BOARD)/*.c)
+C_SRC += src/boards/boards.c
 
 # nrfx
 C_SRC += $(NRFX_PATH)/drivers/src/nrfx_power.c
@@ -172,18 +173,25 @@ IPATH += $(SDK_PATH)/drivers_nrf/uart
 
 else
 
+# pinconfig is required for 840 for CF2
+C_SRC += src/boards/$(BOARD)/pinconfig.c
+
 # USB Application ( MSC + UF2 )
-C_SRC += $(wildcard src/usb/*.c)
-C_SRC += $(wildcard src/usb/uf2/*.c)
+C_SRC += \
+	src/usb/msc_uf2.c \
+	src/usb/usb_desc.c \
+	src/usb/usb.c \
+	src/usb/uf2/ghostfat.c
 
 # TinyUSB stack
-C_SRC += $(TUSB_PATH)/portable/nordic/nrf5x/dcd_nrf5x.c
-C_SRC += $(TUSB_PATH)/common/tusb_fifo.c
-C_SRC += $(TUSB_PATH)/device/usbd.c
-C_SRC += $(TUSB_PATH)/device/usbd_control.c
-C_SRC += $(TUSB_PATH)/class/cdc/cdc_device.c
-C_SRC += $(TUSB_PATH)/class/msc/msc_device.c
-C_SRC += $(TUSB_PATH)/tusb.c
+C_SRC += \
+	$(TUSB_PATH)/portable/nordic/nrf5x/dcd_nrf5x.c \
+	$(TUSB_PATH)/common/tusb_fifo.c \
+	$(TUSB_PATH)/device/usbd.c \
+	$(TUSB_PATH)/device/usbd_control.c \
+	$(TUSB_PATH)/class/cdc/cdc_device.c \
+	$(TUSB_PATH)/class/msc/msc_device.c \
+	$(TUSB_PATH)/tusb.c
 
 endif
 

lib/sdk11/components/libraries/bootloader_dfu/dfu_transport_ble.c

@@ -736,8 +736,8 @@ static void on_ble_evt(ble_evt_t * p_ble_evt)
     ble_gatts_rw_authorize_reply_params_t auth_reply;
 
 #ifdef CFG_DEBUG
-    extern const char* dbg_ble_event_str(uint16_t evt_id);
-    PRINTF("BLE %s\r\n", dbg_ble_event_str(p_ble_evt->header.evt_id));
+    extern void print_ble_event(uint16_t evt_id);
+    print_ble_event(p_ble_evt->header.evt_id);
 #endif
 
     switch (p_ble_evt->header.evt_id)
@@ -1085,6 +1085,7 @@ uint32_t dfu_transport_ble_close()
 
 #ifdef CFG_DEBUG
 
+#if 0
 typedef struct
 {
   uint32_t key;
@@ -1173,18 +1174,22 @@ lookup_table_t const _strevt_table =
   .items = _strevt_lookup
 };
 
-const char* dbg_ble_event_str(uint16_t evt_id)
-{
-  const char * str = (const char *) lookup_find(&_strevt_table, evt_id);
-  static char unknown_str[7] = {0};
+#endif
 
+void print_ble_event(uint16_t evt_id)
+{
+  // const char * str = (const char *) lookup_find(&_strevt_table, evt_id);
+  const char * str = NULL;
+  PRINTF("BLE event: ");
   if ( str == NULL )
   {
-    sprintf(unknown_str, "0x%04X", evt_id);
-    str = unknown_str;
+    PRINTF("0x%04X", evt_id);
+  }else
+  {
+    PRINTF(str);
   }
-
-  return str;
+  PRINTF("\r\n");
 }
 
+
 #endif

src/boards/electronut_labs_papyr/board.h

@@ -60,7 +60,8 @@
 #define UF2_BOARD_ID        "nRF52840-Papyr-v1"
 #define UF2_INDEX_URL       "https://docs.electronut.in/papyr"
 
-#define USB_DESC_VID        0x239A
-#define USB_DESC_UF2_PID    0x003B
+#define USB_DESC_VID           0x239A
+#define USB_DESC_UF2_PID       0x003B
+#define USB_DESC_CDC_ONLY_PID  0x003B
 
 #endif // PPAPYR_H

src/main.c

@@ -238,14 +238,15 @@ static void check_dfu_mode(void)
   _ota_dfu = (gpregret == DFU_MAGIC_OTA_APPJUM) || (gpregret == DFU_MAGIC_OTA_RESET);
 
   // Serial only mode
-  bool serial_only_dfu = (gpregret == DFU_MAGIC_SERIAL_ONLY_RESET);
-  bool uf2_dfu = (gpregret == DFU_MAGIC_UF2_RESET);
+  bool const serial_only_dfu = (gpregret == DFU_MAGIC_SERIAL_ONLY_RESET);
+  bool const uf2_dfu         = (gpregret == DFU_MAGIC_UF2_RESET);
+  bool const dfu_skip        = (gpregret == DFU_MAGIC_SKIP);
+
+  bool const reason_reset_pin = (NRF_POWER->RESETREAS & POWER_RESETREAS_RESETPIN_Msk) ? true : false;
 
   // start either serial, uf2 or ble
   bool dfu_start = _ota_dfu || serial_only_dfu || uf2_dfu ||
-                    (((*dbl_reset_mem) == DFU_DBL_RESET_MAGIC) && (NRF_POWER->RESETREAS & POWER_RESETREAS_RESETPIN_Msk));
-
-  bool const dfu_skip = (gpregret == DFU_MAGIC_SKIP);
+                    (((*dbl_reset_mem) == DFU_DBL_RESET_MAGIC) && reason_reset_pin);
 
   // Clear GPREGRET if it is our values
   if (dfu_start || dfu_skip) NRF_POWER->GPREGRET = 0;
@@ -265,12 +266,9 @@ static void check_dfu_mode(void)
 
   if (!just_start_app && APP_ASKS_FOR_SINGLE_TAP_RESET()) dfu_start = 1;
 
-  // App mode: register 1st reset or DFU startup for nrf52832
+  // App mode: Double Reset detection or DFU startup for nrf52832
   if ( ! (just_start_app || dfu_start || !valid_app) )
   {
-    // Register our first reset for double reset detection
-    (*dbl_reset_mem) = DFU_DBL_RESET_MAGIC;
-
 #ifdef NRF52832_XXAA
     /* Even DFU is not active, we still force an 1000 ms dfu serial mode when startup
      * to support auto programming from Arduino IDE
@@ -279,8 +277,15 @@ static void check_dfu_mode(void)
      */
     bootloader_dfu_start(false, DFU_SERIAL_STARTUP_INTERVAL, false);
 #else
-    // if RST is pressed during this delay (double reset)--> if will enter dfu
-    NRFX_DELAY_MS(DFU_DBL_RESET_DELAY);
+    // Note: RESETREAS is not clear by bootloader, it should be cleared by application upon init()
+    if (reason_reset_pin)
+    {
+      // Register our first reset for double reset detection
+      (*dbl_reset_mem) = DFU_DBL_RESET_MAGIC;
+
+      // if RST is pressed during this delay (double reset)--> if will enter dfu
+      NRFX_DELAY_MS(DFU_DBL_RESET_DELAY);
+    }
 #endif
   }
 

src/usb/uf2/ghostfat.c

@@ -31,6 +31,7 @@
 #include "flash_nrf5x.h"
 #include <string.h>
 #include <stdio.h>
+#include <stdlib.h>
 
 #include "bootloader_settings.h"
 #include "bootloader.h"
@@ -119,7 +120,8 @@ STATIC_ASSERT(FAT_ENTRIES_PER_SECTOR                       ==       256); // FAT
 char infoUf2File[128*3] =
     "UF2 Bootloader " UF2_VERSION "\r\n"
     "Model: " UF2_PRODUCT_NAME "\r\n"
-    "Board-ID: " UF2_BOARD_ID "\r\n";
+    "Board-ID: " UF2_BOARD_ID "\r\n"
+    "Date: " __DATE__ "\r\n";
 
 const char indexFile[] =
     "<!doctype html>\n"
@@ -250,17 +252,33 @@ void uf2_init(void)
     uint32_t const sd_id      = SD_ID_GET(MBR_SIZE);
     uint32_t const sd_version = SD_VERSION_GET(MBR_SIZE);
 
-    uint32_t const ver1 = sd_version / 1000000;
-    uint32_t const ver2 = (sd_version % 1000000)/1000;
-    uint32_t const ver3 = sd_version % 1000;
+    uint32_t ver[3];
+    ver[0] = sd_version / 1000000;
+    ver[1] = (sd_version - ver[0]*1000000)/1000;
+    ver[2] = (sd_version - ver[0]*1000000 - ver[1]*1000);
 
-    sprintf(infoUf2File + strlen(infoUf2File), "S%lu version %lu.%lu.%lu\r\n", sd_id, ver1, ver2, ver3);
+    char str[10];
+    utoa(sd_id, str, 10);
+
+    strcat(infoUf2File, "S");
+    strcat(infoUf2File, str);
+    strcat(infoUf2File, " ");
+
+    utoa(ver[0], str, 10);
+    strcat(infoUf2File, str);
+    strcat(infoUf2File, ".");
+
+    utoa(ver[1], str, 10);
+    strcat(infoUf2File, str);
+    strcat(infoUf2File, ".");
+
+    utoa(ver[2], str, 10);
+    strcat(infoUf2File, str);
+    strcat(infoUf2File, "\r\n");
   }else
   {
     strcat(infoUf2File, "not found\r\n");
   }
-
-  strcat(infoUf2File, "Date: " __DATE__ "\r\n");
 }
 
 /*------------------------------------------------------------------*/

src/usb/usb_desc.c

@@ -25,12 +25,12 @@
 #include "usb_desc.h"
 
 enum {
-    ITF_STR_LANGUAGE = 0 ,
-    ITF_STR_MANUFACTURER ,
-    ITF_STR_PRODUCT      ,
-    ITF_STR_SERIAL       ,
-    ITF_STR_CDC          ,
-    ITF_STR_MSC
+    STRID_LANGUAGE = 0 ,
+    STRID_MANUFACTURER ,
+    STRID_PRODUCT      ,
+    STRID_SERIAL       ,
+    STRID_CDC          ,
+    STRID_MSC
 };
 
 // CDC + MSC or CDC only mode
@@ -84,25 +84,25 @@ enum {
     ITF_NUM_TOTAL
 };
 
-uint8_t const desc_configuration_cdc_msc[] =
+uint8_t desc_configuration_cdc_msc[] =
 {
   // Interface count, string index, total length, attribute, power in mA
-  TUD_CONFIG_DESCRIPTOR(1, ITF_NUM_TOTAL, 0, TUD_CONFIG_DESC_LEN + TUD_CDC_DESC_LEN + TUD_MSC_DESC_LEN, TUSB_DESC_CONFIG_ATT_REMOTE_WAKEUP, 100),
+  TUD_CONFIG_DESCRIPTOR(1, ITF_NUM_TOTAL, 0, TUD_CONFIG_DESC_LEN + TUD_CDC_DESC_LEN + TUD_MSC_DESC_LEN, 0, 100),
 
   // Interface number, string index, EP notification address and size, EP data address (out, in) and size.
-  TUD_CDC_DESCRIPTOR(ITF_NUM_CDC, ITF_STR_CDC, 0x81, 8, 0x02, 0x82, 64),
+  TUD_CDC_DESCRIPTOR(ITF_NUM_CDC, STRID_CDC, 0x81, 8, 0x02, 0x82, 64),
 
   // Interface number, string index, EP Out & EP In address, EP size
-  TUD_MSC_DESCRIPTOR(ITF_NUM_MSC, ITF_STR_MSC, 0x03, 0x83, 64),
+  TUD_MSC_DESCRIPTOR(ITF_NUM_MSC, STRID_MSC, 0x03, 0x83, 64),
 };
 
-uint8_t const desc_configuration_cdc_only[] =
+uint8_t desc_configuration_cdc_only[] =
 {
   // Interface count, string index, total length, attribute, power in mA
-  TUD_CONFIG_DESCRIPTOR(1, ITF_NUM_TOTAL-1, 0, TUD_CONFIG_DESC_LEN + TUD_CDC_DESC_LEN, TUSB_DESC_CONFIG_ATT_REMOTE_WAKEUP, 100),
+  TUD_CONFIG_DESCRIPTOR(1, ITF_NUM_TOTAL-1, 0, TUD_CONFIG_DESC_LEN + TUD_CDC_DESC_LEN, 0, 100),
 
   // Interface number, string index, EP notification address and size, EP data address (out, in) and size.
-  TUD_CDC_DESCRIPTOR(ITF_NUM_CDC, ITF_STR_CDC, 0x81, 8, 0x02, 0x82, 64),
+  TUD_CDC_DESCRIPTOR(ITF_NUM_CDC, STRID_CDC, 0x81, 8, 0x02, 0x82, 64),
 };
 
 
@@ -127,7 +127,19 @@ void usb_desc_init(bool cdc_only)
   }
 
   // Create Serial string descriptor
-  sprintf(desc_str_serial, "%08lX%08lX", NRF_FICR->DEVICEID[1], NRF_FICR->DEVICEID[0]);
+  uint8_t const* device_id = (uint8_t const*) &NRF_FICR->DEVICEID;
+
+  for ( uint8_t i = 0; i < 8; i++ )
+  {
+    for ( uint8_t j = 0; j < 2; j++ )
+    {
+      const char nibble_to_hex[16] = {'0', '1', '2', '3', '4', '5', '6', '7', '8', '9', 'A', 'B', 'C', 'D', 'E', 'F'};
+
+      uint8_t nibble = (device_id[i] >> (j * 4)) & 0xf;
+      desc_str_serial[15 - (i * 2 + j)] = nibble_to_hex[nibble]; // memory is little endian
+    }
+  }
+  desc_str_serial[16] = 0;
 }
 
 //--------------------------------------------------------------------+
@@ -156,7 +168,7 @@ uint16_t const* tud_descriptor_string_cb(uint8_t index, uint16_t langid)
 
   uint8_t chr_count;
 
-  if ( index == 0)
+  if ( index == STRID_LANGUAGE )
   {
     memcpy(&_desc_str[1], string_desc_arr[0], 2);
     chr_count = 1;

src/usb/usb_desc.h

@@ -30,16 +30,4 @@
 
 void usb_desc_init(bool cdc_only);
 
-#ifndef USB_DESC_VID
-#define USB_DESC_VID            0x239A
-#endif
-
-#ifndef USB_DESC_UF2_PID
-#define USB_DESC_UF2_PID        0x0029
-#endif
-
-#ifndef USB_DESC_CDC_ONLY_PID
-#define USB_DESC_CDC_ONLY_PID   0x002A
-#endif
-
 #endif /* USB_DESC_H_ */