CCS/LAUNCHXL-CC1312R1: Firmware Error? Flashprogram

Tool/software: Code Composer Studio

Hi!

one of my lib functions, that are working fine on the CC1310 fail on the CC1312R1. I tried get closer to the error, but it seems to appear often, but randomly:

The routine uses the flash-driver from the driverlib and the latest releases of everything.
The routines from the CC1312R1 driverlib: FlashSectorErase() and FlashProgram() often return an error (although they did what I want, but not always)...

Thanks for your assistance,
Jo

(Btw.: D02/03 RX/TX are changed on the Launchpad-CC1312 to CC1310 ?? )

int16_t writeToCPUFlash(uint32_t dest_adr, uint8_t *psrc, uint32_t size, uint8_t flags){
    int16_t result=0;   // Assume OK

    if(size && !memcmp((uint8_t*)dest_adr,psrc,size)){
        return 0;   // Already OK (makes sense e.g. if only FF is written an empty sector
    }

    if(AONBatMonBatteryVoltageGet()< MIN_VDD_CPU_FLASH) return -138;  // Voltage too low!
    VIMSLineBufDisable(VIMS_BASE);
    VIMSModeSet(VIMS_BASE, VIMS_MODE_DISABLED);
    while(VIMSModeGet(VIMS_BASE) != VIMS_MODE_DISABLED);
    CPUcpsid();

    for(;;){    // dummy loop for cleanup
        if(FlashProtectionGet(dest_adr)==FLASH_WRITE_PROTECT){  // Make sure that sector isn't write protected.
            result = -102;  // Write portected
#ifndef DEBUG_M
            break;
#endif
        }

        /* Optionally Erase a flash Page */
        if(flags & CFLASH_FLAG_ERASE){
            if(dest_adr&(CFLASH_SECTOR_SIZE-1)){
                result = -105;  // Illegal Adr
                break;
            }
            if(FlashSectorErase(dest_adr)!= FAPI_STATUS_SUCCESS){
                result = -136;  // Erase failed
#ifndef DEBUG_M
                break;
#endif
            }
        }

        /* Optionally Write to flash */
        if(flags & CFLASH_FLAG_WRITE){
            if(FlashProgram(psrc, dest_adr, size) != FAPI_STATUS_SUCCESS){
                result = -137;  // Write failed
#ifndef DEBUG_M
                break;
#endif
            }
        }
        /* Optionally verify, saves ca. 30 Bytes if not used  */
        if(flags & CFLASH_FLAG_VERIFY){
            if(memcmp((uint8_t*)dest_adr,psrc,size)){
                result = -138;  // Verify failed
                break;
            }
        }
        break;
    }
    CPUcpsie();
    VIMSModeSet(VIMS_BASE, VIMS_MODE_ENABLED);
    VIMSLineBufEnable(VIMS_BASE);

#ifdef DEBUG_M
if(result){
    my_printf("A:%x F%d: L:%d Res:%d\n",dest_adr,flags,size,result);
    result=0;   // ignore!
}
#endif

    return result; // 0: OK
}