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main.c
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main.c
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// C source code header -*- coding: utf-8 -*-
// Created: [13.16:57 Январь 03 2014]
// Modified: [01.19:34 Июль 12 2014]
// Description:
// Author: Stanislav M. Ivankin
// Email: lessgrep@gmail.com
// Tags: C,stm32
// License: GPLv2
#include <stdlib.h>
#include <stdio.h>
#include <stdint.h>
#include <string.h>
#include <errno.h>
#include <libopencm3/stm32/gpio.h>
#include <defs.h>
#include <board.h>
#include <init.h>
#include <mod/led.h>
#include <mod/usb.h>
#include <mod/usart.h>
#include <mod/spi.h>
#include <mod/at45db.h>
#include <mod/timer.h>
#include <fatfs/fatfs.h>
#include <bl.h>
static int flash_init(void);
static int flash_read(uint8_t *buf, off_t sector, unsigned int sector_num);
fatfs_t fs = {
.hwops = {
.init = &flash_init,
.read = &flash_read,
},
};
int test_fatfs(void)
{
int ret;
uint8_t buf[1024];
memset(buf, 0, 1024);
ret = fatfs_mount(&fs);
if (ret != 0) {
bl_dbg("Failed mounting flash device.");
}
ret = fatfs_open(&fs, "CONFIG.INI");
if (ret) {
bl_dbg("Failed opening config file.");
}
ret = fatfs_read(&fs, buf, 1024);
if (ret < 0) {
bl_dbg("Failed reading data.");
}
buf[ret] = '\0';
d_print("%s\r\n", buf);
fatfs_close(&fs);
fatfs_umount(&fs);
bl_dbg("Done");
#if 0
int k;
for (i = 44; i < 8192; i++) {
at45db_bread(i, 1, buf);
for (k = 0; k < 1024; k++) {
d_print("%c", buf[k]);
wait(25);
}
d_print("Page: %d\r\n", i);
wait(5000);
}
#endif
return 0;
}
#include <libopencm3/stm32/rcc.h>
#include <libopencm3/stm32/gpio.h>
int main(void)
{
bl_init();
usart_start();
spi_start();
if (usbd_start()) {
led_blink(LED_AVAILABLE, LED_STATE_RAPID);
for (;;);
}
/* HW initialized */
led_on(LED_AVAILABLE);
bl_dbg("Bootloader started.");
// test_fatfs();
if (usb_connect()) {
led_on(LED_AVAILABLE);
bl_dbg("USB connected.");
bl_listen();
} else
led_off(LED_AVAILABLE);
bl_dbg("No USB.");
jump_to_app(APP_LOAD_ADDRESS);
return 0;
}
static int flash_init(void)
{
return at45db_start();
}
static int flash_read(uint8_t *buf, off_t sector, unsigned int sector_num)
{
int ret = 0;
off_t off;
off = (sector << SECTOR_PGSHIFT);
d_print("Reading %d bytes at offset %lu\r\n",
sector_num << SECTOR_PGSHIFT, off);
ret = at45db_read(off, sector_num << SECTOR_PGSHIFT, buf);
if (ret == -1)
return -EIO;
return sector_num;
}