getting-started-with-mcp3008-adc-and-spi-on-stm32

#include "main.h"
#include "MCP3008.h"
#include "LiquidCrystal.h"
#include "stdio.h"

/* Private variables ---------------------------------------------------------*/
SPI_HandleTypeDef hspi1;

/* USER CODE BEGIN PV */
MCP3008_SPI spi_mpc3008;
uint16_t adc0,adc1,adc2,adc3;
char MSG_0[20];
char MSG_1[20];
char MSG_2[20];
char MSG_3[20];
float result_0,result_1,result_2,result_3;
/* USER CODE END PV */

int main(void)
{

  HAL_Init();
  SystemClock_Config();
  MX_GPIO_Init();
  MX_SPI1_Init();

  /* USER CODE BEGIN 2 */
MCP3008_Init(&spi_mpc3008, &hspi1, GPIOA, GPIO_PIN_8);
LiquidCrystal(GPIOB, GPIO_PIN_3,GPIO_PIN_4,GPIO_PIN_5,GPIO_PIN_6 ,GPIO_PIN_7,GPIO_PIN_8,GPIO_PIN_9);
begin(20, 4);
  /* USER CODE END 2 */
 
  while (1)
  {
    /* Read ADC's*/
       adc0 = MCP3008_Read_Channel(&spi_mpc3008, 0); // Channel 0
       adc1 = MCP3008_Read_Channel(&spi_mpc3008, 1); // Channel 1
       adc2 = MCP3008_Read_Channel(&spi_mpc3008, 2); // Channel 2
       adc3 = MCP3008_Read_Channel(&spi_mpc3008, 3); // Channel 3

      result_0 = (float)adc0;
      result_1 = (float)adc1;
      result_2 = (float)adc2;
      result_3 = (float)adc3;

      result_0=result_0/200;
      result_1=result_1/200;
      result_2=result_2/200;
      result_3=result_3/200;

      sprintf(MSG_0,"ADC0 Value = %.2f",result_0);
      setCursor(0,0);
      print(MSG_0);
      sprintf(MSG_1,"ADC1 Value = %.2f",result_1);
      setCursor(0,1);
      print(MSG_1);
      sprintf(MSG_2,"ADC2 Value = %.2f",result_2);
      setCursor(0,2);
      print(MSG_2);
      sprintf(MSG_3,"ADC3 Value = %.2f",result_3);
      setCursor(0,3);
      print(MSG_3);
}}