160 lines
4.5 KiB
C
160 lines
4.5 KiB
C
#include "misc.h"
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#include "bsp.h"
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#define MAX_DELAY 0xFFFFFFFU
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static lwip_status_t lwip_status = {.link_status = LINK_DOWN};
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lwip_status_t* get_lwip_status() {
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return &lwip_status;
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}
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void delay(uint32_t delay) {
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uint32_t tickStart = getSysTick();
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uint32_t wait = delay;
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if (wait < MAX_DELAY) {
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wait++;
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}
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while((getSysTick() - tickStart) < wait) {}
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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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RCC_AHB1PeriphClockCmd(
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RCC_AHB1Periph_GPIOA |
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RCC_AHB1Periph_GPIOB |
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RCC_AHB1Periph_GPIOC |
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RCC_AHB1Periph_GPIOD |
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RCC_AHB1Periph_GPIOG,
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ENABLE
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);
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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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}
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void usart_init() {
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GPIO_InitTypeDef gpio;
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const uint16_t usart_pins = GPIO_Pin_5 | GPIO_Pin_6;
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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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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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}
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void tim_init() {
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RCC_APB1PeriphClockCmd(RCC_APB1Periph_TIM7, ENABLE);
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TIM_TimeBaseInitTypeDef tim7;
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TIM_TimeBaseStructInit(&tim7);
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tim7.TIM_Prescaler = 9000-1;
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tim7.TIM_CounterMode = TIM_CounterMode_Up;
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tim7.TIM_Period = 2000;
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tim7.TIM_ClockDivision = TIM_CKD_DIV1;
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TIM_TimeBaseInit(TIM7, &tim7);
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TIM_ClearITPendingBit(TIM7, TIM_IT_Update);
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TIM_UpdateRequestConfig(TIM7, TIM_UpdateSource_Regular);
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TIM_ITConfig(TIM7, TIM_IT_Update, ENABLE);
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NVIC_SetPriority(TIM7_IRQn, 0);
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NVIC_EnableIRQ(TIM7_IRQn);
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TIM_Cmd(TIM7, ENABLE);
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}
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void dma_init() {
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RCC_AHB1PeriphClockCmd(RCC_AHB1Periph_DMA2, ENABLE);
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DMA_InitTypeDef dma;
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dma.DMA_Channel = DMA_Channel_0;
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dma.DMA_DIR = DMA_DIR_MemoryToMemory;
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dma.DMA_PeripheralInc = DMA_PeripheralInc_Enable;
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dma.DMA_MemoryInc = DMA_MemoryInc_Enable;
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dma.DMA_PeripheralDataSize = DMA_PeripheralDataSize_Byte;
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dma.DMA_MemoryDataSize = DMA_MemoryDataSize_Byte;
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dma.DMA_Mode = DMA_Mode_Normal;
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dma.DMA_Priority = DMA_Priority_Low;
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dma.DMA_FIFOMode = DMA_FIFOMode_Enable;
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dma.DMA_FIFOThreshold = DMA_FIFOThreshold_Full;
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dma.DMA_PeripheralBurst = DMA_PeripheralBurst_Single;
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dma.DMA_MemoryBurst = DMA_MemoryBurst_Single;
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DMA_Init(DMA2_Stream0, &dma);
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}
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void eth_init() {
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RCC_AHB1PeriphClockCmd(RCC_AHB1ENR_ETHMACEN, ENABLE);
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RCC_AHB1PeriphClockCmd(RCC_AHB1ENR_ETHMACRXEN, ENABLE);
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RCC_AHB1PeriphClockCmd(RCC_AHB1ENR_ETHMACTXEN, ENABLE);
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GPIO_InitTypeDef gpio;
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gpio.GPIO_Mode = GPIO_Mode_AF;
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gpio.GPIO_Speed = GPIO_Speed_100MHz;
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gpio.GPIO_OType = GPIO_OType_PP;
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gpio.GPIO_PuPd = GPIO_PuPd_NOPULL;
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gpio.GPIO_Pin = GPIO_Pin_1 | GPIO_Pin_2 | GPIO_Pin_7;
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GPIO_Init(GPIOA, &gpio);
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GPIO_PinAFConfig(GPIOA, GPIO_PinSource1, GPIO_AF_ETH); //RMII ref clock
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GPIO_PinAFConfig(GPIOA, GPIO_PinSource2, GPIO_AF_ETH); //RMII MDIO
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GPIO_PinAFConfig(GPIOA, GPIO_PinSource7, GPIO_AF_ETH); //RMII RX Data Valid
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gpio.GPIO_Pin = GPIO_Pin_1 | GPIO_Pin_4 | GPIO_Pin_5;
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GPIO_Init(GPIOC, &gpio);
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GPIO_PinAFConfig(GPIOC, GPIO_PinSource1, GPIO_AF_ETH); //RMII MDC
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GPIO_PinAFConfig(GPIOC, GPIO_PinSource4, GPIO_AF_ETH); //RMII RXD0
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GPIO_PinAFConfig(GPIOC, GPIO_PinSource5, GPIO_AF_ETH); //RMII RXD1
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gpio.GPIO_Pin = GPIO_Pin_11 | GPIO_Pin_13;
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GPIO_Init(GPIOG, &gpio);
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GPIO_PinAFConfig(GPIOG, GPIO_PinSource11, GPIO_AF_ETH); //RMII TX enable
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GPIO_PinAFConfig(GPIOG, GPIO_PinSource13, GPIO_AF_ETH); //RMII TXD0
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gpio.GPIO_Pin = GPIO_Pin_13;
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GPIO_Init(GPIOB, &gpio);
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GPIO_PinAFConfig(GPIOB, GPIO_PinSource13, GPIO_AF_ETH); //RMII TXD1
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NVIC_SetPriority(ETH_IRQn, 0);
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NVIC_EnableIRQ(ETH_IRQn);
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}
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void board_init() {
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uint32_t tick = SystemCoreClock/1000 - 1;
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__enable_irq();
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SysTick_Config(tick);
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NVIC_EnableIRQ(SysTick_IRQn);
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gpio_init();
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usart_init();
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// dma_init();
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eth_init();
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init_LWIP();
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tim_init();
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printf("Controller is started...\r\n");
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}
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