BLUENRG-M2SP module programs returns 0x4A on setting the "Blue Flag".
Hi,
I'm trying to update the FW of the BLUENRG-M2SP module on my X-NUCLEO-BNRG2A1.
I'm using CubeMX with the X-Cube-BLE2.3.1.0 SW pack, together with the IFRStackUpdater application. The IFRStackUpdater works perfectly up to the point where the "Blue Flag" has to be reset, and consistently returns a status of 0x4A (bluenrg_2_utils.c: aci_hal_updater_reset_blue_flag()).
The clearing of the Blue Flag works, and so does the erasing , writing and checksum verification. I even added an additional check, where I read back every block of data that was written, and even this shows up with no errors.
I already tried to look what the 0x4A error code means and discovered it in the BlueNRG-1_2-DK 3.2.1:
In DTM_Updater.c, line 139:
#define BLUEFLAG_FAILED_OP ((uint8_t)0x4A)
It seems the error gets triggered by lines 406 and 407 in DTM_Updater.c
if (flash_sw_lock != FLASH_UNLOCK_WORD)
return ERROR;
Surely, if aci_hal_updater_erase_blue_flag() succeeds, aci_hal_updater_reset_blue_flag() should also succeed, in IFRStackUpdatercode (bluenrg_2_utils.c: program_device())?
Back to the firmware:
What I also find strange in DTM_Updater.c, is that the handling of an error on erasing and resetting of the BLUEFLAG, gets handled in different ways:
case CMD_UPDATER_ERASE_BLUEFLAG:
word_tmp = BLUE_FLAG_RESET;
if(flash_Write(BLUE_FLAG_FLASH_BASE_ADDRESS, (uint8_t *)&word_tmp, 4) == 0) {
event_buffer[EVT_BUFF_OFFSET[dtm_interface]+6] = BLE_STATUS_SUCCESS;
}
else {
event_buffer[4+6] = BLUEFLAG_FAILED_OP; <--------------------------
}
break;
case CMD_UPDATER_RESET_BLUEFLAG:
/* Write the blue flag */
word_tmp = BLUE_FLAG_SET;
if(flash_Write(BLUE_FLAG_FLASH_BASE_ADDRESS, (uint8_t *)&word_tmp, 4) == 0) {
event_buffer[EVT_BUFF_OFFSET[dtm_interface]+6] = BLE_STATUS_SUCCESS;
}
else {
event_buffer[EVT_BUFF_OFFSET[dtm_interface]+6] = BLUEFLAG_FAILED_OP; <----------
}
break;
One final piece of information is that aci_hal_get_updater_version returns a version == 6 and I am using the SPI interface at 1Mbit/s.
It will be much appreciated if anyone could tell me why the aci_hal_updater_reset_blue_flag() call always returns 0x4A.
Thanks.