83 lines
2.3 KiB
C
Executable File
83 lines
2.3 KiB
C
Executable File
/* main.c
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*
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* Test bare-metal blinking led application
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*
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* Copyright (C) 2018 wolfSSL Inc.
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*
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* This file is part of wolfBoot.
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*
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* wolfBoot is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* wolfBoot is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1335, USA
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*/
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#include <stdlib.h>
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#include <stdint.h>
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#include <string.h>
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#include "system.h"
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#include "timer.h"
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#include "led.h"
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#include "hal.h"
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#include "wolfboot/wolfboot.h"
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#ifdef PLATFORM_stm32g0
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#define RCC_IOPENR (*(volatile uint32_t *)(0x40021034)) // 40021034
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#define RCC_IOPENR_GPIOAEN (1 << 0)
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#define GPIOA_BASE 0x50000000
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#define GPIOA_MODE (*(volatile uint32_t *)(GPIOA_BASE + 0x00))
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#define GPIOA_OTYPE (*(volatile uint32_t *)(GPIOA_BASE + 0x04))
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#define GPIOA_OSPD (*(volatile uint32_t *)(GPIOA_BASE + 0x08))
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#define GPIOA_PUPD (*(volatile uint32_t *)(GPIOA_BASE + 0x0c))
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#define GPIOA_ODR (*(volatile uint32_t *)(GPIOA_BASE + 0x14))
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#define GPIOA_BSRR (*(volatile uint32_t *)(GPIOA_BASE + 0x18))
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#define GPIOA_AFL (*(volatile uint32_t *)(GPIOA_BASE + 0x20))
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#define GPIOA_AFH (*(volatile uint32_t *)(GPIOA_BASE + 0x24))
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#define GPIOA_BRR (*(volatile uint32_t *)(GPIOA_BASE + 0x28))
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#define LED_PIN (5)
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#define LED_BOOT_PIN (5)
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#define GPIO_OSPEED_100MHZ (0x03)
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static void gpiotoggle(uint32_t pin)
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{
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if ((GPIOA_ODR & (1 << pin)) != 0x00u)
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{
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GPIOA_BRR |= (1 << pin);
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}
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else
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{
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GPIOA_BSRR |= (1 << pin);
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}
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}
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void main(void)
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{
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uint32_t pin = 0;
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uint32_t i = 0;
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boot_led_on();
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gpiotoggle(5);
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flash_set_waitstates();
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// clock_config();
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while(1) {
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gpiotoggle(5);
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for (i = 0; i < 800000; i++) // Wait a bit.
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asm volatile ("nop");
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}
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}
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#endif /*PLATFORM_stm32g0*/
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