idek

platformio.ini

@@ -12,3 +12,4 @@
 platform = ch32v
 board = genericCH32V003F4P6
 framework = noneos-sdk
+monitor_speed = 115200

src/hall_driver.c

@@ -44,15 +44,9 @@ void ADCConfig(void) {
     ADC_InjectedChannelConfig(ADC1, ADC_Channel_7, 4, ADC_SampleTime_241Cycles);
     ADC_ExternalTrigInjectedConvCmd(ADC1, DISABLE);
 
-    NVIC_InitStructure.NVIC_IRQChannel = ADC_IRQn;
-    NVIC_InitStructure.NVIC_IRQChannelPreemptionPriority = 2;
-    NVIC_InitStructure.NVIC_IRQChannelSubPriority = 0;
-    NVIC_InitStructure.NVIC_IRQChannelCmd = ENABLE;
-    NVIC_Init(&NVIC_InitStructure);
-
-    // ADC_Calibration_Vol(ADC1, ADC_CALVOL_75PERCENT);
-    // ADC_Calibration_Vol(ADC1, ADC_CALVOL_50PERCENT);
+    NVIC_EnableIRQ(ADC_IRQn);
     ADC_ITConfig(ADC1, ADC_IT_JEOC, ENABLE);
+    
     ADC_Cmd(ADC1, ENABLE);
 
     ADC_ResetCalibration(ADC1);

src/i2c_slave.c

@@ -1,41 +1,32 @@
+#include "ch32v00x.h"
 #include "i2c_slave.h"
-#include "uart_driver.h"
+#include <stdio.h>
 
 // https://pallavaggarwal.in/2023/10/05/ch32v003-programming-i2c-eeprom/
 void i2c_init() {
-    GPIO_InitTypeDef GPIO_InitStructure={0};
-    I2C_InitTypeDef I2C_InitTSturcture={0};
+    // Enable clocks
+    RCC->APB2ENR |= RCC_APB2ENR_IOPBEN;
+    RCC->APB1ENR |= RCC_APB1ENR_I2C1EN;
 
-    RCC_APB2PeriphClockCmd( RCC_APB2Periph_GPIOC | RCC_APB2Periph_AFIO, ENABLE );
-    RCC_APB1PeriphClockCmd( RCC_APB1Periph_I2C1, ENABLE );
+    // Set PB6/PB7 to AF Open-Drain
+    GPIOB->CFGLR &= ~((0xF << (4 * 6)) | (0xF << (4 * 7)));
+    GPIOB->CFGLR |= (0xF << (4 * 6)) | (0xF << (4 * 7)); // 0xF = AF OD 50MHz
 
-    GPIO_InitStructure.GPIO_Pin = GPIO_Pin_2;
-    GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AF_OD;
-    GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;
-    GPIO_Init( GPIOC, &GPIO_InitStructure );
+    I2C1->CTLR1 = I2C_CTLR1_SWRST;
+    I2C1->CTLR1 = 0;
 
-    GPIO_InitStructure.GPIO_Pin = GPIO_Pin_1;
-    GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AF_OD;
-    GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;
-    GPIO_Init( GPIOC, &GPIO_InitStructure );
+    I2C1->OADDR1 = (address << 1) & 0xFE;
+    I2C1->OADDR1 |= I2C_OADDR1_ADDMODE; // 7-bit addr
 
-    I2C_InitTSturcture.I2C_ClockSpeed = 100*1000;
-    I2C_InitTSturcture.I2C_Mode = I2C_Mode_I2C;
-    I2C_InitTSturcture.I2C_DutyCycle = I2C_DutyCycle_2;
-    I2C_InitTSturcture.I2C_OwnAddress1 = I2C_SLAVE_ADDR;
-    I2C_InitTSturcture.I2C_Ack = I2C_Ack_Enable;
-    I2C_InitTSturcture.I2C_AcknowledgedAddress = I2C_AcknowledgedAddress_7bit;
+    I2C1->CTLR2 = 36; // 36 MHz APB1
 
-    NVIC_EnableIRQ(I2C1_EV_IRQn); // Event interrupt
-    NVIC_SetPriority(I2C1_EV_IRQn, 2 << 4);
-    NVIC_EnableIRQ(I2C1_ER_IRQn); // Error interrupt
-    NVIC_SetPriority(I2C1_ER_IRQn, 2 << 4);
+    I2C1->STAR1 = 0;
+    I2C1->STAR2 = 0;
 
-    I2C_Init( I2C1, &I2C_InitTSturcture );
+    I2C1->CTLR1 |= I2C_CTLR1_ACK | I2C_CTLR1_PE;
+    I2C1->CTLR1 |= I2C_CTLR1_ITBUFEN | I2C_CTLR1_ITEVTEN;
 
-    I2C_Cmd( I2C1, ENABLE );
-
-    I2C_AcknowledgeConfig( I2C1, ENABLE );
+    NVIC_EnableIRQ(I2C1_EV_IRQn);
 }
 
 void I2C1_EV_IRQHandler(void) {
@@ -44,20 +35,20 @@ void I2C1_EV_IRQHandler(void) {
     STAR2 = I2C1->STAR2;
 
     if (STAR1 & I2C_STAR1_ADDR) { // Start event
-        UartStringSend("Start Event\r\n");
+        printf("Start Event\r\n");
     }
 
     if (STAR1 & I2C_STAR1_RXNE) { // Write event
-        UartStringSend("Write Event\r\n");
+        printf("Write Event\r\n");
     }
 
     if (STAR1 & I2C_STAR1_TXE) { // Read event
-        UartStringSend("Read Event\r\n");
+        printf("Read Event\r\n");
     }
 
     if (STAR1 & I2C_STAR1_STOPF) { // Stop event
         I2C1->CTLR1 &= ~(I2C_CTLR1_STOP); // Clear stop
-        UartStringSend("Stop Event\r\n");
+        printf("Stop Event\r\n");
     }
 }
 
@@ -66,17 +57,17 @@ void I2C1_ER_IRQHandler(void) {
 
     if (STAR1 & I2C_STAR1_BERR) { // Bus error
         I2C1->STAR1 &= ~(I2C_STAR1_BERR); // Clear error
-        UartStringSend("Bus error\r\n");
+        printf("Bus error\r\n");
     }
 
     if (STAR1 & I2C_STAR1_ARLO) { // Arbitration lost error
         I2C1->STAR1 &= ~(I2C_STAR1_ARLO); // Clear error
-        UartStringSend("Arbitration lost error\r\n");
+        printf("Arbitration lost error\r\n");
     }
 
     if (STAR1 & I2C_STAR1_AF) { // Acknowledge failure
         I2C1->STAR1 &= ~(I2C_STAR1_AF); // Clear error
-        UartStringSend("Ack Failure\r\n");
+        printf("Ack Failure\r\n");
     }
 }
 

src/i2c_slave.h

@@ -7,7 +7,8 @@
 
 void i2c_init();
 
-void I2C1_EV_IRQHandler(void) __attribute__((interrupt));
-void I2C1_ER_IRQHandler(void) __attribute__((interrupt));
+
+void I2C1_EV_IRQHandler(void) __attribute__((interrupt("WCH-Interrupt-fast")));
+void I2C1_ER_IRQHandler(void) __attribute__((interrupt("WCH-Interrupt-fast")));
 
 #endif /* I2C_SLAVE_H */

src/main.c

@@ -2,7 +2,6 @@
 #include <debug.h>
 #include "neopixel_driver.h"
 // #include "bit_bang_neopixel.h"
-#include "uart_driver.h"
 #include "hall_driver.h"
 #include "i2c_slave.h"
  
@@ -21,8 +20,8 @@ int main(void)
     // allow some time to enter flash mode, in case something gets screwed up
     Delay_Ms(1000);
 
-    USARTx_CFG();
-    UartStringSend("Hello World!\r\n");
+    USART_Printf_Init(115200);
+    printf("Hello World!\r\n");
 
     SPINeoPixelDriverInit();
     // BBNeoPixelDriverInit();
@@ -59,9 +58,7 @@ int main(void)
 
         adcFlag = 0;
         
-        char buffer[64] = {0};
-        // sprintf(buffer, "%d\t%d\t%d\t%d\r\n", adc_readings[0], adc_readings[1], adc_readings[2], adc_readings[3]);
-        // UartStringSend(buffer);
+        // printf("%d\t%d\t%d\t%d\r\n", adc_readings[0], adc_readings[1], adc_readings[2], adc_readings[3]);
 
         for (int i = 0; i < 4; i++) {
             if (adc_readings[i] > adc_calibration_values[i] + 5) {

src/uart_driver.c

@@ -1,56 +0,0 @@
-#include "uart_driver.h"
-
-void USARTx_CFG(void) {
-    GPIO_InitTypeDef  GPIO_InitStructure = {0};
-    USART_InitTypeDef USART_InitStructure = {0};
-    NVIC_InitTypeDef  NVIC_InitStructure = {0};
-
-    RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIOD | RCC_APB2Periph_USART1, ENABLE);
-
-    /* USART1 TX-->D.5   RX-->D.6 */
-    GPIO_InitStructure.GPIO_Pin = GPIO_Pin_5;
-    GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;
-    GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AF_PP;
-    GPIO_Init(GPIOD, &GPIO_InitStructure);
-    
-    GPIO_InitStructure.GPIO_Pin = GPIO_Pin_6;
-    GPIO_InitStructure.GPIO_Mode = GPIO_Mode_IN_FLOATING;
-    GPIO_Init(GPIOD, &GPIO_InitStructure);
-
-    USART_InitStructure.USART_BaudRate = 115200;
-    USART_InitStructure.USART_WordLength = USART_WordLength_8b;
-    USART_InitStructure.USART_StopBits = USART_StopBits_1;
-    USART_InitStructure.USART_Parity = USART_Parity_No;
-    USART_InitStructure.USART_HardwareFlowControl = USART_HardwareFlowControl_None;
-    USART_InitStructure.USART_Mode = USART_Mode_Tx | USART_Mode_Rx;
-
-    USART_Init(USART1, &USART_InitStructure);
-    USART_ITConfig(USART1, USART_IT_RXNE, ENABLE);
-
-    NVIC_InitStructure.NVIC_IRQChannel = USART1_IRQn;
-    NVIC_InitStructure.NVIC_IRQChannelPreemptionPriority = 1;
-    NVIC_InitStructure.NVIC_IRQChannelSubPriority = 1;
-    NVIC_InitStructure.NVIC_IRQChannelCmd = ENABLE;
-    NVIC_Init(&NVIC_InitStructure);;
-
-    USART_Cmd(USART1, ENABLE);
-}
-
-void UartBufferSend(uint8_t* buffer, uint16_t length)
-{
-    uint16_t i = 0;
-    for(i =0; i < length; i++)
-    {
-        while(USART_GetFlagStatus(USART1, USART_FLAG_TXE) == RESET); /* waiting for sending finish */
-        USART_SendData(USART1, buffer[i]);
-    }
-}
-
-void UartStringSend(char* string) {
-    uint16_t i = 0;
-    while (string[i] != '\0') {
-        while(USART_GetFlagStatus(USART1, USART_FLAG_TXE) == RESET); /* waiting for sending finish */
-        USART_SendData(USART1, string[i]);
-        i += 1;
-    }
-}

src/uart_driver.h

@@ -1,10 +0,0 @@
-#ifndef UART_DRIVER_H
-#define UART_DRIVER_H
-
-#include <ch32v00x.h>
-
-void USARTx_CFG(void);
-void UartBufferSend(uint8_t* buffer, uint16_t length);
-void UartStringSend(char* string);
-
-#endif // UART_DRIVER_H