#include<stm32f10x_rcc.h>
#include<stm32f10x_gpio.h>
#include "stm32f10x.h"
#include "stm32f10x_usart.h"

void _debug_print_byte(char c){
while(!(USART1->SR & USART_SR_TC));
USART1->DR = c;
}

void _debug_print_str(char *s){
do{
_debug_print_byte(*s);
}while(*(++s));
}

void _debug_print_num(uint16_t var){
char c, s[6], *p_s = &s[0], *p2_s;
uint8_t i, j = 0;

do {
*p_s++ = var % 10 + '0';
j++;
} while ((var /= 10) > 0);
*p_s = '\0';

for (i = 0, p_s--, p2_s = &s[0]; i<j; i++, j--) {
c = *p2_s;
*p2_s++ = *p_s;
*p_s-- = c;
}
_debug_print_str(s);
}

int main(void)
{

uint32_t i;
GPIO_InitTypeDef PORT;

// Initialize USART1
USART_InitTypeDef USART_InitStructure;
GPIO_InitTypeDef PORT;
RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIOB | RCC_APB2Periph_AFIO, ENABLE);
RCC_APB2PeriphClockCmd(RCC_APB2Periph_USART1, ENABLE);
AFIO->MAPR |= AFIO_MAPR_USART1_REMAP;
PORT.GPIO_Pin = GPIO_Pin_6;
PORT.GPIO_Speed = GPIO_Speed_2MHz;
PORT.GPIO_Mode = GPIO_Mode_AF_PP;
GPIO_Init(GPIOB, &PORT);

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_Init(USART1, &USART_InitStructure);
USART_Cmd(USART1, ENABLE);



RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIOC , ENABLE);
RCC_APB2PeriphClockCmd(RCC_APB2ENR_ADC1EN, ENABLE);
ADC1->CR2 |= ADC_CR2_CAL;
while (!(ADC1->CR2 & ADC_CR2_CAL))
ADC1->CR1 |= ADC_CR1_SCAN;
ADC1->CR2 |= ADC_CR2_EXTSEL;
ADC1->CR2 |= ADC_CR2_EXTTRIG;
ADC1->SQR3 |= (ADC_SQR3_SQ1_3|ADC_SQR3_SQ1_2|ADC_SQR3_SQ1_1|ADC_SQR3_SQ1_0);
ADC1->CR2 |= ADC_CR2_ADON;
ADC1->CR2 |= ADC_CR2_SWSTART;
while (!(ADC1->SR & ADC_SR_EOC));
while(1)
{
i = 0xffff;
while(i--);
ADC1->CR2 |= ADC_CR2_SWSTART;
while (!(ADC1->SR & ADC_SR_EOC));
_debug_print_num(ADC1->DR);
_debug_print_str("\r\n");

}
}

int main(void)
{
uint32_t i;
GPIO_InitTypeDef PORT;

RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIOC , ENABLE);
RCC_APB2PeriphClockCmd(RCC_APB2ENR_ADC1EN, ENABLE);
ADC1->CR2 |= ADC_CR2_CAL;
while (!(ADC1->CR2 & ADC_CR2_CAL))
ADC1->CR1 |= ADC_CR1_SCAN;
ADC1->CR2 |= ADC_CR2_EXTSEL;
ADC1->CR2 |= ADC_CR2_EXTTRIG;
ADC1->SQR3 |= (ADC_SQR3_SQ1_3|ADC_SQR3_SQ1_2|ADC_SQR3_SQ1_1|ADC_SQR3_SQ1_0);
ADC1->CR2 |= ADC_CR2_ADON;
ADC1->CR2 |= ADC_CR2_SWSTART;
while (!(ADC1->SR & ADC_SR_EOC));
while(1)
{
i = 0xffff;
while(i--);
ADC1->CR2 |= ADC_CR2_SWSTART;
while (!(ADC1->SR & ADC_SR_EOC));
_debug_print_num(ADC1->DR);
_debug_print_str("\r\n");

}
}