149 lines
3.6 KiB
C
149 lines
3.6 KiB
C
#include <stdio.h>
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// https://github.com/openwch/ch32v307/pull/90
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// https://github.com/openwch/ch32v20x/pull/12
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#ifdef __GNUC__
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#pragma GCC diagnostic push
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#pragma GCC diagnostic ignored "-Wstrict-prototypes"
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#endif
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#include "ch32v10x.h"
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#ifdef __GNUC__
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#pragma GCC diagnostic pop
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#endif
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#include "bsp/board_api.h"
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#include "board.h"
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__attribute__((interrupt)) __attribute__((used))
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void USBHD_IRQHandler(void) {
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#if CFG_TUD_WCH_USBIP_USBFS
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tud_int_handler(0);
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#endif
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}
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__attribute__((interrupt)) __attribute__((used))
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void USBWakeUp_IRQHandler(void) {
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#if CFG_TUD_WCH_USBIP_USBFS
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tud_int_handler(0);
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#endif
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}
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#if CFG_TUSB_OS == OPT_OS_NONE
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volatile uint32_t system_ticks = 0;
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__attribute__((interrupt)) __attribute__((used))
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void SysTick_Handler(void) {
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SysTick->CNTL0 = SysTick->CNTL1 = SysTick->CNTL2 = SysTick->CNTL3 = 0;
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SysTick->CNTH0 = SysTick->CNTH1 = SysTick->CNTH2 = SysTick->CNTH3 = 0;
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system_ticks++;
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}
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uint32_t SysTick_Config(uint32_t ticks) {
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NVIC_EnableIRQ(SysTicK_IRQn);
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SysTick->CTLR = 0;
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SysTick->CNTL0 = SysTick->CNTL1 = SysTick->CNTL2 = SysTick->CNTL3 = 0;
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SysTick->CNTH0 = SysTick->CNTH1 = SysTick->CNTH2 = SysTick->CNTH3 = 0;
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SysTick->CMPLR0 = (u8)(ticks & 0xFF);
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SysTick->CMPLR1 = (u8)(ticks >> 8);
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SysTick->CMPLR2 = (u8)(ticks >> 16);
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SysTick->CMPLR3 = (u8)(ticks >> 24);
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SysTick->CMPHR0 = SysTick->CMPHR1 = SysTick->CMPHR2 = SysTick->CMPHR3 = 0;
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SysTick->CTLR = 1;
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return 0;
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}
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uint32_t board_millis(void) {
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return system_ticks;
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}
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#endif
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void board_init(void) {
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__disable_irq();
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#if CFG_TUSB_OS == OPT_OS_NONE
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SysTick_Config(SystemCoreClock / 1000);
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#endif
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RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIOA, ENABLE);
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EXTEN->EXTEN_CTR |= EXTEN_USBFS_IO_EN;
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uint8_t usb_div;
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switch (SystemCoreClock) {
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case 48000000: usb_div = RCC_USBCLKSource_PLLCLK_Div1; break;
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case 72000000: usb_div = RCC_USBCLKSource_PLLCLK_1Div5; break;
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default: TU_ASSERT(0,); break;
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}
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RCC_USBCLKConfig(usb_div);
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RCC_AHBPeriphClockCmd(RCC_AHBPeriph_USBFS, ENABLE);
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#ifdef LED_PIN
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GPIO_InitTypeDef led_init = {
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.GPIO_Pin = LED_PIN,
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.GPIO_Mode = GPIO_Mode_Out_OD,
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.GPIO_Speed = GPIO_Speed_50MHz,
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};
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GPIO_Init(LED_PORT, &led_init);
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#endif
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#ifdef BUTTON_PIN
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GPIO_InitTypeDef button_init = {
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.GPIO_Pin = BUTTON_PIN,
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.GPIO_Mode = GPIO_Mode_IPU,
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.GPIO_Speed = GPIO_Speed_50MHz,
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};
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GPIO_Init(BUTTON_PORT, &button_init);
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#endif
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// UART TX is PA9
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RCC_APB2PeriphClockCmd(RCC_APB2Periph_USART1, ENABLE);
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GPIO_InitTypeDef usart_init = {
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.GPIO_Pin = GPIO_Pin_9,
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.GPIO_Speed = GPIO_Speed_50MHz,
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.GPIO_Mode = GPIO_Mode_AF_PP,
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};
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GPIO_Init(GPIOA, &usart_init);
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USART_InitTypeDef usart = {
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.USART_BaudRate = 115200,
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.USART_WordLength = USART_WordLength_8b,
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.USART_StopBits = USART_StopBits_1,
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.USART_Parity = USART_Parity_No,
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.USART_Mode = USART_Mode_Tx,
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.USART_HardwareFlowControl = USART_HardwareFlowControl_None,
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};
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USART_Init(USART1, &usart);
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USART_Cmd(USART1, ENABLE);
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__enable_irq();
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board_led_write(true);
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}
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void board_led_write(bool state) {
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GPIO_WriteBit(LED_PORT, LED_PIN, state ? LED_STATE_ON : (1-LED_STATE_ON));
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}
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uint32_t board_button_read(void) {
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return BUTTON_STATE_ACTIVE == GPIO_ReadInputDataBit(BUTTON_PORT, BUTTON_PIN);
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}
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int board_uart_read(uint8_t *buf, int len) {
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(void) buf;
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(void) len;
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return 0;
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}
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int board_uart_write(void const *buf, int len) {
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const char *bufc = (const char *) buf;
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for (int i = 0; i < len; i++) {
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while (USART_GetFlagStatus(USART1, USART_FLAG_TC) == RESET);
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USART_SendData(USART1, *bufc++);
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}
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return len;
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}
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