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103 lines
2.4 KiB
103 lines
2.4 KiB
#include "mks_wifi_hal_f4.h"
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#ifdef STM32F4
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#include "../../libs/fatfs/sdio_driver_f4.h"
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volatile unsigned char *buff;
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volatile unsigned char buffer_ready;
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volatile unsigned char dma_stopped;
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volatile __attribute__ ((aligned (4))) unsigned int *dma_buff[2];
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volatile unsigned char dma_buff_index=0;
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void mks_wifi_hw_prepare(unsigned int buf, unsigned int count){
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//На время передачи отключение systick
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SysTick->CTRL &= ~SysTick_CTRL_ENABLE_Msk;
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RCC->APB1ENR &= ~RCC_APB1ENR_TIM5EN;
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RCC->APB2ENR &= ~RCC_APB2ENR_TIM10EN;
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RCC->APB2RSTR |= RCC_APB2RSTR_USART1RST;
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RCC->APB2RSTR &= ~RCC_APB2RSTR_USART1RST;
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USART1->CR1 = USART_CR1_UE;
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USART1->CR1 = USART_CR1_TE | USART_CR1_UE;
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USART1->BRR = (uint32_t)(84000000+1958400/2)/1958400;
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USART1->CR2 = 0;
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USART1->CR3 = USART_CR3_DMAR;
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USART1->SR = 0;
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USART1->CR1 |= USART_CR1_RE;
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DMA2_Stream5->CR = 0;
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DMA2->HIFCR=DMA_S5_CLEAR;
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DMA2_Stream5->PAR = (uint32_t)&USART1->DR;
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DMA2_Stream5->M0AR = (uint32_t)buf;
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DMA2_Stream5->NDTR = count;
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DMA2_Stream5->CR = DMA_CONF|DMA_SxCR_EN;
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NVIC_EnableIRQ(DMA2_Stream5_IRQn);
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};
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void mks_wifi_disable_dma(void){
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DMA2->HIFCR=DMA_S5_CLEAR;
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DMA2_Stream5->CR = 0;
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}
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void mks_wifi_empty_uart(void){
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while(USART1->SR & USART_SR_RXNE){
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(void)USART1->DR;
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};
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}
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void mks_wifi_hw_deinit_sd(void){
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sd_reset();
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};
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void wd_reset(void){
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hal.watchdog_refresh();
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}
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void mks_wifi_hw_restore(void){
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RCC->APB1ENR |= RCC_APB1ENR_TIM5EN;
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RCC->APB2ENR |= RCC_APB2ENR_TIM10EN;
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SysTick->CTRL |= SysTick_CTRL_ENABLE_Msk;
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}
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void mks_wifi_sys_rst(void){
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NVIC_SystemReset();
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};
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extern "C" void DMA2_Stream5_IRQHandler(void){
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if(DMA2->HISR & DMA_HISR_TEIF5){
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DEBUG("DMA Error");
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dma_stopped = 2;
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DMA2->HIFCR=DMA_S5_CLEAR;
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return;
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}
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if(buffer_ready > 0){
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GPIOC->BSRR = GPIO_BSRR_BS7; //остановить передачу от esp
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dma_stopped=1;
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};
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DMA2->HIFCR=DMA_S5_CLEAR;
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//Указатель на полученный буфер
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buff=(unsigned char*)dma_buff[dma_buff_index];
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//переключить индекс
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dma_buff_index = (dma_buff_index) ? 0 : 1;
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DMA2_Stream5->CR = DMA_CONF;
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DMA2_Stream5->M0AR = (uint32_t)dma_buff[dma_buff_index];
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DMA2_Stream5->NDTR = ESP_PACKET_SIZE;
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DMA2_Stream5->CR = DMA_CONF|DMA_SxCR_EN;
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++buffer_ready;
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}
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#endif
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