feat: add support for SoftDevice S340

.gitignore

@@ -65,3 +65,7 @@ TAGS
 
 .DS_Store
 Makefile.user
+
+# Exclude all SoftDevice S340 files
+lib/softdevice/s340*
+

CMakeLists.txt

@@ -225,32 +225,29 @@ if (MCU_VARIANT STREQUAL "nrf52")
   set(SD_NAME s132)
   set(DFU_DEV_REV 0xADAF)
   set(DFU_APP_DATA_RESERVED 7*4096)
-  target_compile_definitions(bootloader PUBLIC
-    NRF52
-    NRF52832_XXAA
-    S132
-    )
+  target_compile_definitions(bootloader PUBLIC NRF52 NRF52832_XXAA)
 elseif (MCU_VARIANT STREQUAL "nrf52833")
-  set(SD_NAME s140)
   set(DFU_DEV_REV 52833)
   set(DFU_APP_DATA_RESERVED 7*4096)
-  target_compile_definitions(bootloader PUBLIC
-    NRF52833_XXAA
-    S140
-    )
+  target_compile_definitions(bootloader PUBLIC NRF52833_XXAA)
+  if (NOT DEFINED SD_NAME)
+    set(SD_NAME s140)
+  endif ()
 elseif (MCU_VARIANT STREQUAL "nrf52840")
-  set(SD_NAME s140)
   set(DFU_DEV_REV 52840)
   # App reserved 40KB (8+32) to match circuitpython for 840
   set(DFU_APP_DATA_RESERVED 10*4096)
-  target_compile_definitions(bootloader PUBLIC
-    NRF52840_XXAA
-    S140
-    )
+  target_compile_definitions(bootloader PUBLIC NRF52840_XXAA)
+  if (NOT DEFINED SD_NAME)
+    set(SD_NAME s140)
+  endif ()
 else ()
   message(FATAL_ERROR "MCU_VARIANT ${MCU_VARIANT} is unknown")
 endif ()
 
+string(TOUPPER ${SD_NAME} SD_NAME_UPPER)
+target_compile_definitions(bootloader PUBLIC ${SD_NAME_UPPER})
+
 set(SD_FILENAME ${SD_NAME}_nrf52_${SD_VERSION})
 set(SD_HEX ${SOFTDEVICE_DIR}/${SD_FILENAME}/${SD_FILENAME}_softdevice.hex)
 

Makefile

@@ -104,25 +104,32 @@ BIN = _bin/$(BOARD)
 
 # MCU_SUB_VARIANT can be nrf52 (nrf52832), nrf52833, nrf52840
 ifeq ($(MCU_SUB_VARIANT),nrf52)
+  CFLAGS += -DNRF52 -DNRF52832_XXAA
   SD_NAME = s132
   DFU_DEV_REV = 0xADAF
-  CFLAGS += -DNRF52 -DNRF52832_XXAA -DS132
   DFU_APP_DATA_RESERVED=7*4096
 else ifeq ($(MCU_SUB_VARIANT),nrf52833)
-  SD_NAME = s140
+  CFLAGS += -DNRF52833_XXAA
   DFU_DEV_REV = 52833
-  CFLAGS += -DNRF52833_XXAA -DS140
   DFU_APP_DATA_RESERVED=7*4096
+  ifndef SD_NAME
+		SD_NAME = s140
+	endif
 else ifeq ($(MCU_SUB_VARIANT),nrf52840)
-  SD_NAME = s140
+  CFLAGS += -DNRF52840_XXAA
   DFU_DEV_REV = 52840
-  CFLAGS += -DNRF52840_XXAA -DS140
   # App reserved 40KB (8+32) to match circuitpython for 840
   DFU_APP_DATA_RESERVED=10*4096
+  ifndef SD_NAME
+		SD_NAME = s140
+	endif
 else
   $(error Sub Variant $(MCU_SUB_VARIANT) is unknown)
 endif
 
+SD_NAME_UPPER = $(subst s,S,${SD_NAME})
+CFLAGS += -D$(SD_NAME_UPPER)
+
 #------------------------------------------------------------------------------
 # SOURCE FILES
 #------------------------------------------------------------------------------

lib/softdevice/s340_nrf52_7.0.1/readme.md

@@ -0,0 +1,18 @@
+## Working with SoftDevice S340
+
+The SoftDevice S340 is closed-source, not publicly available and is only distributed by Garmin Canada Inc.
+
+In order to be able to download the required ANT+ capable SoftDevice and place SoftDevice S340 v7.0.1 files here. You need to register an 'ANT+ Adopter' account at [thisisant.com](https://www.thisisant.com/register/). After around one business day you will receive access to the resources there. Then do the following steps:
+- Download the SoftDevice S340 v7.0.1 [(here)](https://www.thisisant.com/developer/components/nrf52832#tab_protocol_stacks_tab) and extract its contents
+- Under `lib/softdevice` in this repository there is a folder called `s340_nrf52_7.0.1`
+    - Copy the API folder `ANT_s340_nrf52_7.0.1.API`, the license agreement `License_Agreement_ANT_Softdevice_rev3_3.pdf` and the hex file `ANT_s340_nrf52_7.0.1.hex` from the extracted contents to it.
+    - Rename the API folder to `s340_nrf52_7.0.1_API`
+    - Rename the hex file to `s340_nrf52_7.0.1_softdevice.hex`
+    - Modify `lib/softdevice/s340_nrf52_7.0.1_API/include/nrf_sdm.h` on line 191 and remove the two slashes at the beginning of `//#define...` to use the *evaluation key* for the ANT SoftDevice.
+    - **VERY IMPORTANT:** You MUST obtain a valid commercial license key BEFORE releasing a product to market that uses the ANT SoftDevice!
+
+To add or modify a board with an ANT+ capable SoftDevice S340 the `SD_VERSION` and `SD_NAME` parameters in the corresponding `board.mk` file have to be set:
+```
+SD_VERSION = 7.0.1
+SD_NAME = s340
+```

src/main.c

@@ -157,6 +157,15 @@ static void mbr_init_sd(void) {
   sd_mbr_command(&com);
 }
 
+// Disable the SoftDevice if it is enabled.
+static void disable_softdevice(void) {
+  uint8_t sd_enabled = 0;
+  sd_softdevice_is_enabled(&sd_enabled);
+  if (sd_enabled == 1) {
+    sd_softdevice_disable();
+  }
+}
+
 //--------------------------------------------------------------------+
 //
 //--------------------------------------------------------------------+
@@ -206,13 +215,14 @@ int main(void) {
       if (!_sd_inited) mbr_init_sd();
 
       // Make sure SD is disabled
-      sd_softdevice_disable();
+      disable_softdevice();
     }
 
     // clear in case we kept DFU_DBL_RESET_APP there
     (*dbl_reset_mem) = 0;
 
     // start application
+    PRINTF("Starting app...\r\n");
     bootloader_app_start();
   }
 
@@ -306,7 +316,7 @@ static void check_dfu_mode(void) {
     }
 
     if (_ota_dfu) {
-      sd_softdevice_disable();
+      disable_softdevice();
     } else {
       usb_teardown();
     }
@@ -326,7 +336,11 @@ static uint32_t ble_stack_init(void) {
       .rc_temp_ctiv = 2,
       .accuracy     = NRF_CLOCK_LF_ACCURACY_250_PPM
   };
-  sd_softdevice_enable(&clock_cfg, app_error_fault_handler);
+  #ifdef ANT_LICENSE_KEY
+    sd_softdevice_enable(&clock_cfg, app_error_fault_handler, ANT_LICENSE_KEY);
+  #else
+    sd_softdevice_enable(&clock_cfg, app_error_fault_handler);
+  #endif
   sd_nvic_EnableIRQ(SD_EVT_IRQn);
 
   /*------------- Configure BLE params  -------------*/