A4M6

The A4M6, the16 Pin of the CH32v003 series chips.

12/4/2025 PWM 2 timers and random flashing for one and standby mode WITH FIX OF CH32V003 BUG.

11/23/25 Speed test code:

/** * File Name : main.c * Author : Sherm * Version : V1.0.0 * Date : 2025/11/22 * Description : A4M6 testing**/

#include "debug.h"
void GPIOConfig(){    GPIO_InitTypeDef GPIO_InitStructure = {0};
    RCC_APB2PeriphClockCmd( RCC_APB2Periph_GPIOC , ENABLE);    GPIO_InitStructure.GPIO_Pin = GPIO_Pin_All; //Apply the settings on all pins under the selected port    GPIO_InitStructure.GPIO_Mode = GPIO_Mode_IPU; //Internal pull-up -> Contributes to power saving
    GPIO_Init(GPIOC, &GPIO_InitStructure);

    GPIO_InitStructure.GPIO_Pin = GPIO_Pin_0; //PC1 - LED pin    GPIO_InitStructure.GPIO_Mode = GPIO_Mode_Out_PP; //Push-pull ("toggleable") configuration    GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz; //Lowest speed    GPIO_Init(GPIOC, &GPIO_InitStructure);}

int main(void){    NVIC_PriorityGroupConfig(NVIC_PriorityGroup_1);    SystemCoreClockUpdate();    Delay_Init();    GPIOConfig(); //Configure the GPIOs -> All IPUs + 1 GPIO for the LED    for(u8 i=0;i<6;i++){        GPIO_WriteBit(GPIOC, GPIO_Pin_0, Bit_SET);        Delay_Ms(50);        GPIO_WriteBit(GPIOC, GPIO_Pin_0, Bit_RESET);        Delay_Ms(50);    }
    while(1)    {        //GPIO_WriteBit(GPIOC, GPIO_Pin_0, Bit_SET);        GPIOC->BSHR = GPIO_Pin_0; //definitly faster then the GPIO_WriteBit func.. by 4x+        //Delay_Ms(200);        //GPIO_WriteBit(GPIOC, GPIO_Pin_0, Bit_RESET);        GPIOC->BCR = GPIO_Pin_0;/* Delay_Ms(200);        GPIO_WriteBit(GPIOC, GPIO_Pin_1, Bit_SET);        Delay_Ms(3000); //Wait 3 seconds        GPIO_WriteBit(GPIOC, GPIO_Pin_1, Bit_RESET); */
    }}

Put system_ch32v00x.c clock on internal speeds. All speeds tested(see CH32v300 page).