bootloader/iap.c

/*
===============================================================================
 Name        : iap.c
 Author      : $(author)
 Version     :
 Copyright   : $(copyright)
 Description : main definition
===============================================================================
*/

#ifdef __USE_CMSIS
#include "LPC17xx.h"
#endif

#include "iap.h"

unsigned int command[5];
unsigned int output[5];
IAP iap_entry =(IAP) IAP_LOCATION;

int addr_to_sector(int addr){
	int tmp = addr & 0xfffff;
	tmp = tmp >> 12;
	if(tmp <= 15) return tmp;
	else{
		if(tmp >= 0x10 && tmp <=0x17)
			return 16;
		else if(tmp >= 0x18 && tmp <= 0x1f)
			return 17;
		else if(tmp >= 0x20 && tmp <= 0x27)
			return 18;
		else if(tmp >= 0x28 && tmp <= 0x2f)
			return 19;
		else if(tmp >= 0x30 && tmp <= 0x37)
			return 20;
		else if(tmp >= 0x38 && tmp <= 0x3f)
			return 21;
		else if(tmp >= 0x40 && tmp <= 0x47)
			return 22;
		else if(tmp >= 0x48 && tmp <= 0x4f)
			return 23;
		else if(tmp >= 0x50 && tmp <= 0x57) return 24;
		else if(tmp >= 0x58 && tmp <= 0x3f) return 25;
		else if(tmp >= 0x60 && tmp <= 0x67) return 26;
		else if(tmp >= 0x68 && tmp <= 0x6f) return 27;
		else if(tmp >= 0x70 && tmp <= 0x77) return 28;
		else if(tmp >= 0x78 && tmp <= 0x7f) return 29;
	}
}

void iap_entry_wrapped(void){
	__disable_irq();
    iap_entry(command, output);
    __enable_irq();
}


void iap_prepare_sectors(error_code* status, int start, int end){
    command[0] = 50;
    command[1] = start;
    command[2] = end;
    iap_entry_wrapped();
    if(output[0] == IAP_CMD_SUCCESS) {
        *status = 0;
    }else{
        *status = output[0];
    }
}

void iap_erase_sectors(error_code* status, int start, int end){
    iap_prepare_sectors(status, start, end);
    command[0] = 52; //erase sectors
    command[1] = start; //start sector
    command[2] = end; //end sector
    command[3] = IAP_CLOCK_100M;
    iap_entry_wrapped();
    if(output[0] == IAP_CMD_SUCCESS) {
    }else{
        *status = output[0];
    }
}

uint32_t iap_read_part_id(error_code* status){
    //iap_prepare_sectors(dst_flash, dst_flash+num_bytes-1);
	iap_prepare_sectors(status, 2, 10);
    command[0] = 54;
    iap_entry_wrapped();
        if(output[0] == IAP_CMD_SUCCESS) {
        *status = 0;
        return output[1];
    }else{
        *status = -1;
        return -1;
    }
}

void iap_copy_to_flash(error_code* status, long unsigned int * dst_flash, long unsigned int* src_ram, int num_bytes){
    iap_prepare_sectors(status, addr_to_sector(dst_flash), addr_to_sector(dst_flash+num_bytes));
    command[0] = 51;
    command[1] = dst_flash;
    command[2] = src_ram;
    command[3] = num_bytes;
    command[4] = IAP_CLOCK_100M;
    iap_entry_wrapped();
    if(output[0] == IAP_CMD_SUCCESS) {
        *status = 0;
    }else{
        *status = output[0];
    }
}

void iap_read_serial(error_code* status, uint32_t* res){
    //iap_prepare_sectors(status, 2, 9);
    command[0] = 58;
    iap_entry_wrapped();
        if(output[0] == IAP_CMD_SUCCESS) {
        *status = 0;
        res[0] = output[1];
        res[1] = output[2];
        res[2] = output[3];
        res[3] = output[4];
    }else{
        *status = output[0];
    }
}

// TODO: insert other include files here

// TODO: insert other definitions and declarations here
/*
int main(void) {
    LPC_PINCON->PINSEL4 &= ~0xFF;  //Configure the PORT2 Pins as GPIO;
    LPC_GPIO2->FIODIR = 0xff;  //Configure the PORT2 pins as OUTPUT;
    iap_read_part_id();
    iap_erase_sectors(2, 9);
    iap_copy_to_flash(0x8000,(uint8_t*)test, 4);
}*/