mirror of https://github.com/wolfSSL/wolfBoot.git
99 lines
2.7 KiB
C
99 lines
2.7 KiB
C
/* nrf52.c
|
|
*
|
|
* Copyright (C) 2021 wolfSSL Inc.
|
|
*
|
|
* This file is part of wolfBoot.
|
|
*
|
|
* wolfBoot is free software; you can redistribute it and/or modify
|
|
* it under the terms of the GNU General Public License as published by
|
|
* the Free Software Foundation; either version 3 of the License, or
|
|
* (at your option) any later version.
|
|
*
|
|
* wolfBoot is distributed in the hope that it will be useful,
|
|
* but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
|
* GNU General Public License for more details.
|
|
*
|
|
* You should have received a copy of the GNU General Public License
|
|
* along with this program; if not, write to the Free Software
|
|
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1335, USA
|
|
*/
|
|
|
|
#include <stdlib.h>
|
|
#include <stdint.h>
|
|
#include <string.h>
|
|
#include "wolfboot/wolfboot.h"
|
|
|
|
|
|
#define GPIO_BASE (0x50000000)
|
|
#define GPIO_OUT *((volatile uint32_t *)(GPIO_BASE + 0x504))
|
|
#define GPIO_OUTSET *((volatile uint32_t *)(GPIO_BASE + 0x508))
|
|
#define GPIO_OUTCLR *((volatile uint32_t *)(GPIO_BASE + 0x50C))
|
|
#define GPIO_PIN_CNF ((volatile uint32_t *)(GPIO_BASE + 0x700)) // Array
|
|
|
|
|
|
#define BAUD_115200 0x01D7E000
|
|
|
|
#define UART0_BASE (0x40002000)
|
|
#define UART0_TASK_STARTTX *((volatile uint32_t *)(UART0_BASE + 0x008))
|
|
#define UART0_TASK_STOPTX *((volatile uint32_t *)(UART0_BASE + 0x00C))
|
|
#define UART0_EVENT_ENDTX *((volatile uint32_t *)(UART0_BASE + 0x120))
|
|
#define UART0_ENABLE *((volatile uint32_t *)(UART0_BASE + 0x500))
|
|
#define UART0_TXD_PTR *((volatile uint32_t *)(UART0_BASE + 0x544))
|
|
#define UART0_TXD_MAXCOUNT *((volatile uint32_t *)(UART0_BASE + 0x548))
|
|
#define UART0_BAUDRATE *((volatile uint32_t *)(UART0_BASE + 0x524))
|
|
|
|
|
|
static const char extradata[1024 * 16] = "hi!";
|
|
|
|
static void gpiotoggle(uint32_t pin)
|
|
{
|
|
uint32_t reg_val = GPIO_OUT;
|
|
GPIO_OUTCLR = reg_val & (1 << pin);
|
|
GPIO_OUTSET = (~reg_val) & (1 << pin);
|
|
}
|
|
|
|
|
|
void uart_init(void)
|
|
{
|
|
UART0_BAUDRATE = BAUD_115200;
|
|
UART0_ENABLE = 1;
|
|
|
|
}
|
|
|
|
void uart_write(char c)
|
|
{
|
|
UART0_EVENT_ENDTX = 0;
|
|
|
|
UART0_TXD_PTR = (uint32_t)(&c);
|
|
UART0_TXD_MAXCOUNT = 1;
|
|
UART0_TASK_STARTTX = 1;
|
|
while(UART0_EVENT_ENDTX == 0)
|
|
;
|
|
}
|
|
|
|
static const char START='*';
|
|
void main(void)
|
|
{
|
|
//uint32_t pin = 19;
|
|
uint32_t pin = 6;
|
|
int i;
|
|
uint32_t version = 0;
|
|
uint8_t *v_array = (uint8_t *)&version;
|
|
(void)extradata;
|
|
GPIO_PIN_CNF[pin] = 1; /* Output */
|
|
|
|
version = wolfBoot_current_firmware_version();
|
|
|
|
uart_init();
|
|
uart_write(START);
|
|
for (i = 3; i >= 0; i--) {
|
|
uart_write(v_array[i]);
|
|
}
|
|
while(1) {
|
|
gpiotoggle(pin);
|
|
for (i = 0; i < 800000; i++) // Wait a bit.
|
|
asm volatile ("nop");
|
|
}
|
|
}
|