therm Changeset - 8f7cba39fbe7 · protofusion repositories

Changeset - 8f7cba39fbe7

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cortex-f0

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Ethan Zonca - 9 years ago 2015-06-01 16:54:27
ez@ethanzonca.com

Added notes about jumping to user program, etc. Need to check boot flags to match F042 processor (example was f1).

1 file changed with 12 insertions and 0 deletions:

bootlib.c

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bootlib.c

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 #include "stm32f0xx_hal.h"
 /* Notes:
 Need to have DFU jump right to the program to unset those option bytes, or somehow have dfu-util unset them. Probably try using the :leave parameter...
        Flashing a binary file to address 0x8004000 of device memory and ask the device to leave DFU mode:
          $ dfu-util -a 0 -s 0x08004000:leave -D /path/to/image.bin
 */
 // Unset bootloader option bytes
 void bootloader_unset(void)
+{
     FLASH_OBProgramInitTypeDef OBParam;
     HAL_FLASHEx_OBGetConfig(&OBParam);
     if(OBParam.USERConfig != 0xFF)
+    {
         OBParam.OptionType = OPTIONBYTE_USER;
         OBParam.USERConfig = 0xFF;
         HAL_FLASH_Unlock();
         HAL_FLASH_OB_Unlock();
         HAL_FLASHEx_OBErase();
         HAL_FLASHEx_OBProgram(&OBParam);
         HAL_FLASH_OB_Lock();
         HAL_FLASH_OB_Launch();
+    }
+}
 // See thread: https://my.st.com/public/STe2ecommunities/mcu/Lists/cortex_mx_stm32/Flat.aspx?RootFolder=https%3a%2f%2fmy.st.com%2fpublic%2fSTe2ecommunities%2fmcu%2fLists%2fcortex_mx_stm32%2fJump%20to%20USB%20DFU%20Bootloader%20in%20startup%20code%20on%20STM32F042&FolderCTID=0x01200200770978C69A1141439FE559EB459D7580009C4E14902C3CDE46A77F0FFD06506F5B&currentviews=185
 // Set option bytes to enter bootloader upon reset
 void bootloader_enter(void) {
     FLASH_OBProgramInitTypeDef OBParam;
     HAL_FLASHEx_OBGetConfig(&OBParam);
     // FIXME TODO: CHECK THESE OPTION BYTES, he was using an F1 processor. What about the switch flag?
     OBParam.OptionType = OPTIONBYTE_USER;
     /*Reset NBOOT0 and BOOT_SEL,  see: RM 2.5 Boot configuration*/
     OBParam.USERConfig = 0x77; //Sorry for magic number :)
     HAL_FLASH_Unlock();
     HAL_FLASH_OB_Unlock();
     HAL_FLASHEx_OBErase();
     HAL_FLASHEx_OBProgram(&OBParam);
     HAL_FLASH_OB_Lock();
     HAL_FLASH_Lock();
     HAL_FLASH_OB_Launch();
+}

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