90 lines
2.2 KiB
C
90 lines
2.2 KiB
C
#include "bsp.h"
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#include <stdio.h>
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// int _write(int fd, char* ptr, int len) {
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// int i= 0;
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// while(i < len) {
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// while (USART_GetFlagStatus(USART2, USART_FLAG_TXE) == RESET);
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// USART_SendData(USART2, *ptr++);
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// i++;
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// }
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// return len;
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// }
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void SysTick_Handler(void)
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{
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GPIO_ToggleBits(GPIOB, GPIO_Pin_14);
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}
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void USART2_IRQHandler()
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{
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}
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void sysTick_init(void) {
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uint32_t tick = 10000000;
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SysTick->LOAD = tick;
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SysTick->VAL = 0;
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SysTick->CTRL = SysTick_CTRL_CLKSOURCE_Msk | SysTick_CTRL_TICKINT_Msk | SysTick_CTRL_ENABLE_Msk;
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}
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void gpio_init() {
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const uint16_t led_pins = GPIO_Pin_0 | GPIO_Pin_7 | GPIO_Pin_14;
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const uint16_t usart_pins = GPIO_Pin_5 | GPIO_Pin_6;
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RCC_AHB1PeriphClockCmd(RCC_AHB1Periph_GPIOB, ENABLE);
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RCC_AHB1PeriphClockCmd(RCC_AHB1Periph_GPIOD, ENABLE);
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GPIO_InitTypeDef gpio;
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GPIO_StructInit(&gpio);
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gpio.GPIO_Mode = GPIO_Mode_OUT;
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gpio.GPIO_Pin = led_pins;
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GPIO_Init(GPIOB, &gpio);
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GPIO_ResetBits(GPIOB, led_pins);
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gpio.GPIO_Mode = GPIO_Mode_AF;
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gpio.GPIO_Pin = usart_pins;
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gpio.GPIO_Speed = GPIO_Speed_50MHz;
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gpio.GPIO_OType = GPIO_OType_PP;
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gpio.GPIO_PuPd = GPIO_PuPd_UP;
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GPIO_Init(GPIOD, &gpio);
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GPIO_PinAFConfig(GPIOD, GPIO_PinSource5, GPIO_AF_USART2);
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GPIO_PinAFConfig(GPIOD, GPIO_PinSource6, GPIO_AF_USART2);
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}
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void usart_init() {
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RCC_APB1PeriphClockCmd(RCC_APB1Periph_USART2, ENABLE);
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USART_InitTypeDef usart;
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usart.USART_BaudRate = 115200;
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usart.USART_Mode = USART_Mode_Rx | USART_Mode_Tx;
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USART_Init(USART2, &usart);
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USART_Cmd(USART2, ENABLE);
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//NVIC_EnableIRQ(USART2_IRQn);
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}
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void ethernet_init() {
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ETH_InitTypeDef ETH_InitStructure;
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RCC_AHB1PeriphClockCmd(RCC_AHB1Periph_ETH_MAC | RCC_AHB1Periph_ETH_MAC_Tx | RCC_AHB1Periph_ETH_MAC_Rx, ENABLE);
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}
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void board_init() {
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// uint32_t tick = 16777216;
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uint32_t tick = 0x1000000;
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SysTick_Config(tick);
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NVIC_EnableIRQ(SysTick_IRQn);
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__enable_irq();
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gpio_init();
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usart_init();
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// ETH_BSP_Config();
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printf("Controller is started...\n");
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// printf("clk: %.d\r\n", tick);
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}
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