Hi,
The procedure is for version2.4.1. But, it should be work in Wiced 3 also and it is using different file name.
The step can be like this.
1. you should have the new firmware ready in the external flash.
2. you can use the platform_copy_external_to_internal(), copy from external to internal. But, the function should be done none since the inside is not finished yet. You can just copy it from external to internal and start the app. (Remark: we are working on BCM9WCDUSI09 module)
If everything is OK, no jtag is needed to program the external flash.
Yes, you are right. Therefore, we have customized our OTA version instead of original one.
Keith Lam
void platform_upgrade_app( void )
{
sflash_handle_t sflash_handle;
bootloader_app_header_t external_app_header;
platform_dct_header_t external_dct_header;
bootloader_app_header_t image_header;
uint32_t image_loc;
static uint8_t rx_buffer[4096]; /* API Function will not return, so it is safe to declare static big buffer */
uint32_t write_address = APP_HDR_START_ADDR;
uint32_t progress;
/* Init the external SPI flash */
init_sflash( &sflash_handle, PLATFORM_SFLASH_PERIPHERAL_ID, SFLASH_WRITE_NOT_ALLOWED );
sflash_read( &sflash_handle, 0, &external_app_header, sizeof( external_app_header ) );
sflash_read( &sflash_handle, external_app_header.size_of_app, &external_dct_header, sizeof( external_dct_header ) );
watchdog_kick( );
image_loc = ((external_app_header.size_of_app + external_dct_header.used_size)/(64*1024) + 1)*64*1024;
/* Mark the App image as invalid to guard against power failure during writing */
platform_set_app_valid_bit( APP_INVALID );
watchdog_kick( );
/* Erase the internal flash memory */
platform_erase_app( );
watchdog_kick( );
/* Read the image header */
sflash_read( &sflash_handle, image_loc, &image_header, sizeof( image_header ) );
watchdog_kick( );
/* Quick image validation */
/* Flash the upgrade app */
progress = 0;
while ( progress < image_header.size_of_app )
{
/* Read a chunk of image data */
uint32_t read_size = MIN(image_header.size_of_app - progress, sizeof(rx_buffer));
sflash_read( &sflash_handle, image_loc + progress, &rx_buffer, read_size );
/* Write it to the flash */
platform_write_flash_chunk( write_address, rx_buffer, read_size );
write_address += read_size;
progress += read_size;
watchdog_kick( );
}
platform_set_app_valid_bit( APP_VALID );
platform_start_app( 0 );
}
