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Part Number: MSP432P401R
Hello everybody!
I would like to achieve a field firmware update for my device. Currently I am testing with a msp432p401r launchpad and CCS version: 9.0.1.00004.
My plan is to store the new firmware (led blinking program) in the flash, and after I press a button (P1.1), I invoke the BSL.
The BSL checks a fixed variable in the flash, if it matches the required value, it replaces the current program (led is off) to the blinking program
and than performs a reset.
How can I write to the BSL code? Do I have to change my cmd file for this task?
I think I invoke the BSL correctly, but I don't know how to do the replacing.
Any help is appreciated.
My code so far:
#include <msp.h>
#include "flashmailbox.h"
#include "driverlib.h"
#include "msp432p401r.h"
#include <string.h>
#define FIRMWARE_READY_PARAM_ADDRESS 0x0003E000
#define BSL_PARAM 0xFC48FFFF // I2C slave address = 0x48, Interface selection = Auto
#define LED_BLINK_SOFTWARE_MEMORY_ADDRESS_START 0x0003F000
#define LED_BLINK_SOFTWARE_ARRAY 512
unsigned char led_blink_software_array[LED_BLINK_SOFTWARE_ARRAY] = { 0x00, 0x00, 0x01, 0x20, 0xD1, 0x01, 0x00, 0x00, 0xE5,
0x01, 0x00, 0x00, 0xE5, 0x01, 0x00, 0x00, 0xE5, 0x01,
0x00, 0x00, 0xE5, 0x01, 0x00, 0x00, 0xE5, 0x01, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0xE5,
0x01, 0x00, 0x00, 0xE5, 0x01, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0xE5, 0x01, 0x00, 0x00, 0xE5, 0x01, 0x00,
0x00, 0xE5, 0x01, 0x00, 0x00, 0xE5, 0x01, 0x00, 0x00,
0xE5, 0x01, 0x00, 0x00, 0xE5, 0x01, 0x00, 0x00, 0xE5,
0x01, 0x00, 0x00, 0xE5, 0x01, 0x00, 0x00, 0xE5, 0x01,
0x00, 0x00, 0xE5, 0x01, 0x00, 0x00, 0xE5, 0x01, 0x00,
0x00, 0xE5, 0x01, 0x00, 0x00, 0xE5, 0x01, 0x00, 0x00,
0xE5, 0x01, 0x00, 0x00, 0xE5, 0x01, 0x00, 0x00, 0xE5,
0x01, 0x00, 0x00, 0xE5, 0x01, 0x00, 0x00, 0xE5, 0x01,
0x00, 0x00, 0xE5, 0x01, 0x00, 0x00, 0xE5, 0x01, 0x00,
0x00, 0xE5, 0x01, 0x00, 0x00, 0xE5, 0x01, 0x00, 0x00,
0xE5, 0x01, 0x00, 0x00, 0xE5, 0x01, 0x00, 0x00, 0xE5,
0x01, 0x00, 0x00, 0xE5, 0x01, 0x00, 0x00, 0xE5, 0x01,
0x00, 0x00, 0xE5, 0x01, 0x00, 0x00, 0xE5, 0x01, 0x00,
0x00, 0xE5, 0x01, 0x00, 0x00, 0xE5, 0x01, 0x00, 0x00,
0xE5, 0x01, 0x00, 0x00, 0xE5, 0x01, 0x00, 0x00, 0xE5,
0x01, 0x00, 0x00, 0xE5, 0x01, 0x00, 0x00, 0xE5, 0x01,
0x00, 0x00, 0xE5, 0x01, 0x00, 0x00, 0xE5, 0x01, 0x00,
0x00, 0xE5, 0x01, 0x00, 0x00, 0xE5, 0x01, 0x00, 0x00,
0xE5, 0x01, 0x00, 0x00, 0xE5, 0x01, 0x00, 0x00, 0xE5,
0x01, 0x00, 0x00, 0x15, 0x49, 0x08, 0x68, 0x40, 0xF4,
0x70, 0x00, 0x08, 0x60, 0x14, 0x49, 0x4F, 0xF4, 0xB5,
0x40, 0x08, 0x80, 0x13, 0x49, 0x80, 0x20, 0x08, 0x60,
0x12, 0x49, 0x46, 0xF6, 0x5A, 0x10, 0x08, 0x60, 0x11,
0x49, 0x4F, 0xF4, 0x80, 0x30, 0x08, 0x60, 0x10, 0x48,
0x10, 0x49, 0x00, 0x68, 0x20, 0xF0, 0x07, 0x10, 0x40,
0xF0, 0x03, 0x00, 0x08, 0x60, 0x0A, 0x49, 0x00, 0x20,
0x08, 0x60, 0x0C, 0x48, 0x0B, 0x49, 0x00, 0x68, 0x20,
0xF0, 0x30, 0x00, 0x08, 0x60, 0x0A, 0x48, 0x09, 0x49,
0x00, 0x68, 0x20, 0xF0, 0x30, 0x00, 0x08, 0x60, 0x70,
0x47, 0x88, 0xED, 0x00, 0xE0, 0x0C, 0x48, 0x00, 0x40,
0x14, 0x30, 0x04, 0xE0, 0x00, 0x04, 0x01, 0x40, 0x04,
0x04, 0x01, 0x40, 0x08, 0x04, 0x01, 0x40, 0x10, 0x10,
0x01, 0x40, 0x14, 0x10, 0x01, 0x40, 0xAD, 0xF1, 0x08,
0x0D, 0x0C, 0x49, 0x4F, 0xF4, 0xB5, 0x40, 0x08, 0x80,
0x0B, 0x49, 0x08, 0x78, 0x40, 0xF0, 0x01, 0x00, 0x08,
0x70, 0x0A, 0x49, 0x08, 0x78, 0x80, 0xF0, 0x01, 0x00,
0x08, 0x70, 0x08, 0x48, 0x00, 0x90, 0x00, 0x98, 0x00,
0x28, 0xF5, 0xD0, 0x00, 0x98, 0x40, 0x1E, 0x00, 0x90,
0x00, 0x98, 0x00, 0x28, 0xF9, 0xD1, 0xEE, 0xE7, 0x0C,
0x48, 0x00, 0x40, 0x04, 0x4C, 0x00, 0x40, 0x02, 0x4C,
0x00, 0x40, 0xA0, 0x86, 0x01, 0x00, 0x08, 0x48, 0x80,
0xF3, 0x08, 0x88, 0x08, 0x49, 0x08, 0x68, 0x40, 0xF4,
0x70, 0x00, 0x08, 0x60, 0x00, 0xBF, 0x00, 0xBF, 0x00,
0xF0, 0x10, 0xF8, 0x00, 0x20, 0xFF, 0xF7, 0xCD, 0xFF,
0x01, 0x20, 0x00, 0xF0, 0x0C, 0xF8, 0x00, 0x00, 0x01,
0x20, 0x88, 0xED, 0x00, 0xE0, 0x08, 0xB5, 0xFF, 0xF7,
0x87, 0xFF, 0xFF, 0xF7, 0xE5, 0xBF, 0x08, 0xBD, 0x01,
0x20, 0x70, 0x47, 0x00, 0xBF, 0xFE, 0xE7, 0xFE, 0xE7,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00};
//variable detect if we interrupt occurs
volatile bool jumpToBsl = false;
unsigned char* firmware_ready;
int main(){
// Stop watchdog
MAP_WDT_A_holdTimer();
// LEDINIT
MAP_GPIO_setAsOutputPin(GPIO_PORT_P1, GPIO_PIN0);
P1OUT &= ~BIT0;
// Set MCLK to 48MHz
MAP_PCM_setCoreVoltageLevel(PCM_VCORE1);
FlashCtl_setWaitState(FLASH_BANK0, 1);
FlashCtl_setWaitState(FLASH_BANK1, 1);
MAP_CS_setDCOCenteredFrequency(CS_DCO_FREQUENCY_48);
unsigned char tmp;
firmware_ready=&tmp;
*firmware_ready=0;
//FLash write
MAP_FlashCtl_unprotectSector(FLASH_MAIN_MEMORY_SPACE_BANK1,FLASH_SECTOR30);
if(!MAP_FlashCtl_eraseSector(FIRMWARE_READY_PARAM_ADDRESS))
while(1);
if(!MAP_FlashCtl_programMemory(firmware_ready,(void*) FIRMWARE_READY_PARAM_ADDRESS, 1))
while(1);
MAP_FlashCtl_protectSector(FLASH_MAIN_MEMORY_SPACE_BANK1,FLASH_SECTOR30);
// Flash write
MAP_FlashCtl_unprotectSector(FLASH_MAIN_MEMORY_SPACE_BANK1,FLASH_SECTOR31);
if(!MAP_FlashCtl_eraseSector(LED_BLINK_SOFTWARE_MEMORY_ADDRESS_START))
while(1);
if(!MAP_FlashCtl_programMemory(led_blink_software_array,(void*) LED_BLINK_SOFTWARE_MEMORY_ADDRESS_START, LED_BLINK_SOFTWARE_ARRAY))
while(1);
MAP_FlashCtl_protectSector(FLASH_MAIN_MEMORY_SPACE_BANK1,FLASH_SECTOR31);
// Configure P1.1 as an input and enabling the interrupt
MAP_GPIO_setAsInputPinWithPullUpResistor(GPIO_PORT_P1, GPIO_PIN1);
MAP_GPIO_interruptEdgeSelect(GPIO_PORT_P1, GPIO_PIN1, GPIO_HIGH_TO_LOW_TRANSITION);
MAP_GPIO_clearInterruptFlag(GPIO_PORT_P1, GPIO_PIN1);
MAP_GPIO_enableInterrupt(GPIO_PORT_P1, GPIO_PIN1);
MAP_Interrupt_enableInterrupt(INT_PORT1);
MAP_Interrupt_enableMaster();
unsigned long i;
while(1)
{
for(i=2000000; i>0; i--);// delay cycles
if (jumpToBsl)
{
//FLash write
MAP_FlashCtl_unprotectSector(FLASH_MAIN_MEMORY_SPACE_BANK1,FLASH_SECTOR30);
if(!MAP_FlashCtl_eraseSector(FIRMWARE_READY_PARAM_ADDRESS))
while(1);
if(!MAP_FlashCtl_programMemory(firmware_ready,(void*) FIRMWARE_READY_PARAM_ADDRESS, 1))
while(1);
MAP_FlashCtl_protectSector(FLASH_MAIN_MEMORY_SPACE_BANK1,FLASH_SECTOR30);
// Flash write
MAP_FlashCtl_unprotectSector(FLASH_MAIN_MEMORY_SPACE_BANK1,FLASH_SECTOR31);
jumpToBsl = false;
MAP_Interrupt_disableMaster();
// Setup interrupt priorities into 0x00 before entering bootloader
for (i=0; i < 240; i++)
NVIC->IP[i] = 0;
NVIC->ICER[0] = 0xFFFF;// must be cleared before invoking BSL
NVIC->ICPR[0] = 0xFFFF;
NVIC->ICER[1] = 0xFFFF;
NVIC->ICPR[1] = 0xFFFF;
// Call the BSL with given BSL parameters
BSL_INVOKE((uint32_t)BSL_PARAM);
//#define BSL_INVOKE(x) ((void (*)())BSL_ENTRY_FUNCTION)((uint32_t) x) /*!< Invoke the BSL with parameters */ from msp432p401r.h
}
}
}
void PORT1_IRQHandler(void)
{
uint32_t status;
status = MAP_GPIO_getEnabledInterruptStatus(GPIO_PORT_P1);
MAP_GPIO_clearInterruptFlag(GPIO_PORT_P1, status);
if(status & GPIO_PIN1)
{
jumpToBsl = true;
*firmware_ready=true;
}
}
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