#include "main.h"
#include "hal.h"
#include "usart.h"
#include "sensors.h"
#include "co2_sensor.h"
#include "lcd_display.h"
#include "pressure_sensor.h"
#include "bme280.h"
#include "bme280_defs.h"
#include <stdio.h>
#include <stdlib.h>
#include <string.h>

unsigned char tx[28];
unsigned char rx[28];

struct bme280_dev dev;
int8_t rslt = BME280_OK;


void pressure_sensor_init(void){


/* Sensor_0 interface over SPI with native chip select line */


dev.dev_id = 0;
dev.intf = BME280_SPI_INTF;
dev.read = spi_read;
dev.write = spi_write;
dev.delay_ms = delay_ms;

HAL_GPIO_WritePin(SPI2_NSS_GPIO_Port,SPI2_NSS_Pin,GPIO_PIN_RESET);//set CSB to zero
HAL_Delay(1000);
unsigned int pin_state3 = HAL_GPIO_ReadPin(SPI2_NSS_GPIO_Port,SPI2_NSS_Pin);// read pin to be sure its 0
 printf("CSB PIN is :%d\n", pin_state3);


rslt = bme280_init(&dev);

  
  
}

int8_t spi_read(uint8_t dev_id, uint8_t reg_addr, uint8_t *reg_data, uint16_t len)
{
    HAL_StatusTypeDef status = HAL_OK;
    unsigned char rxarray[SPI_BUFFER_LEN] = {0,};
    unsigned char txarray[SPI_BUFFER_LEN]={0,};
    int8_t rslt = 0; /* Return 0 for Success, non-zero for failure */
    txarray[0] = reg_addr;
      
    HAL_GPIO_WritePin(SPI2_NSS_GPIO_Port,SPI2_NSS_Pin,GPIO_PIN_RESET);
    status = HAL_SPI_TransmitReceive(&spi2,(uint8_t*) &txarray,(uint8_t*) &rxarray,len,HAL_MAX_DELAY);
    HAL_Delay(2000);
    HAL_GPIO_WritePin(SPI2_NSS_GPIO_Port,SPI2_NSS_Pin,GPIO_PIN_SET);
    

    if (status != HAL_OK)
    {
       HAL_GPIO_WritePin(GPIOA,GPIO_PIN_1,GPIO_PIN_SET);
    }
    else{
      HAL_GPIO_WritePin(GPIOA,GPIO_PIN_4,GPIO_PIN_SET);
    }
    
    return rslt;
}

int8_t spi_write(uint8_t dev_id, uint8_t reg_addr, uint8_t *reg_data, uint16_t len)
{
    int8_t rslt = 0; /* Return 0 for Success, non-zero for failure */
    
  HAL_GPIO_WritePin(SPI2_NSS_GPIO_Port,SPI2_NSS_Pin,GPIO_PIN_RESET);
  if (HAL_SPI_Transmit(&spi2, (uint8_t*)tx, strlen((char*)tx), HAL_MAX_DELAY)== HAL_OK){
    
  HAL_GPIO_WritePin(SPI2_NSS_GPIO_Port,SPI2_NSS_Pin,GPIO_PIN_SET);
  }
  return rslt;
}




void delay_ms(uint32_t period)
{
    HAL_Delay(1000);
}