Compiler/RM48L952: Need Help on RM48L952 UART Bootloader

Hello Murali,

I have forwarded your post to one of our boot loader experts. They should get back with you soon. In the meantime, what errors are you getting when you attempt to erase? i.e., when you call the erase return, it should return a status value indicating success or failure and for what reason.

Dear chuck,

We are waiting for the support, we tried so many methods using available example codes, but even FLASH ERASE and WRITE using FLASH API code is also not working we followed as per application notes.
Waiting for fast response to the technical issue.

Thanks and regards,
Murali Prasad

Murali,

The code that is included with the application note is validated working code so there must be some gap in the process you have followed which we will need to identify.

First, can you provide some details on any status return values from the code. i.e., when you issue the flash erase command, what it he return code of the operation status? Are you certain the programming code is being copied to RAM appropriately? You cannot execute from the same bank while also trying to erase it so you must insure the execution is from either a separate bank or from RAM.

Also, I apologize for any delays in providing answers, our support team for Hercules is located in Houston, TX which, as you have probably heard has been devastated with rain and flooding in the aftermath of Hurricane Harvey. We are beginning to recover and be able to provide support, but please be aware that there may be longer delays in getting answers than normal.

Murali,

Have you had a look at this application note and the example code referenced by it?

www.ti.com/.../spna190

Chuck,

1)We have gone through the application notes.
2) we are writing the bootloader code to FLASH0 and writing application code to FLASH1 and we checked the bootloader application code being written to respective flash memory banks using uniflash.
3)In bootloader code we are end of code we are giving below instruction so bootloader to jump to application code

JumpAddress = (uint32_t)APP_START_ADDRESS; // APP_START_ADDRESS =0000dccc ("_c_int00" address: 0000dccc)
((void (*)(void))JumpAddress)();

systemREG1->SYSECR = 0; //used for software reset so it will go to application code.

BOOTLOADER linker File content:
/*----------------------------------------------------------------------------*/
/* Linker Settings */
--retain="*(.intvecs)"
/*----------------------------------------------------------------------------*/
/* Memory Map */

MEMORY
{
/* USER CODE BEGIN (2) */
VECTORS (X) : fill=0xFFFFFFFF origin=0x00000000 length=0x00000020
BOOT_LOAD (RX) : fill=0xFFFFFFFF origin=0x00000020 length=0x00007FE0
FLASH0 (RX) : vfill=0xFFFFFFFF origin=0x00008000 length=0x00178000
FLASH1 (RX) : vfill=0xFFFFFFFF origin=0x00180000 length=0x00180000

STACKS (RW) : origin=0x08000000 length=0x00001500
RAM (RW) : origin=0x08001500 length=0x0003EB00
/* USER CODE END */
}

SECTIONS
{
/* USER CODE BEGIN (4) */
.intvecs : {} > VECTORS

.text : {} > FLASH0
.const : {} > FLASH0
.cinit : {} > FLASH0
.pinit : {} > FLASH0

.stack : {} > STACKS

.bss : {} > RAM
.data : {} > RAM
.sysmem : {} > RAM
/* USER CODE END */
}

APPLICATION CODE link file content:
/*----------------------------------------------------------------------------*/
/* Linker Settings */
--retain="*(.intvecs)"
/*----------------------------------------------------------------------------*/
/* Memory Map */

MEMORY
{
//VECTORS (X) : origin=0x00000000 length=0x00000020
VECTORS (X) : origin=0x00180000 length=0x00000020
FLASH0 (RX) : origin=0x00000000 length=0x00180000
FLASH1 (RX) : origin=0x00180020 length=0x0017FFE0
STACKS (RW) : origin=0x08000000 length=0x00001500
RAM (RW) : origin=0x08001500 length=0x0003EB00

/* USER CODE BEGIN (2) */
/* USER CODE END */
}
/*----------------------------------------------------------------------------*/
/* Section Configuration */

SECTIONS
{
/* USER CODE BEGIN (4) */
.intvecs : {} > VECTORS
.text : {} > FLASH1
.const : {} > FLASH1
.cinit : {} > FLASH1
.pinit : {} > FLASH1
.bss : {} > RAM
.data : {} > RAM
.sysmem : {} > RAM
/* USER CODE END */
}

Currently application is not getting executed by MCU.

Let me know any mistakes were made during linker file configuration.

Thanks,
Murali Prasad

Hello Murali,

I am going to forward your post to one of our boot loader specialists to see if they can offer any assistance. One of my initial observations is that the interrupt vectors cannot be relocated to bank1. They have to be at address 0. This is a requirement of the CPU but I think there is some dependency on which mode you are operating the VIM in.