HomeEnergyMeter/STM32/Core/Src/oneWire.c

#include "stm32f1xx_hal.h"
#include "oneWireDriver.h"
#include<stdio.h>


uint8_t check = 2, temp_l = 0, temp_h = 0;
int16_t temp = 0;
float temperature;
int tempInt;





void testOneWireTimingFunc() {

	HAL_Delay(100);
	gpio_set_input(); // set as output
	while(1) {
		writeByte(0xAA);
		us_delay(100);
		/*writeBitOn();
		us_delay(40);
		gpio_set_input(); // set as output
		us_delay(10);
		gpio_set_output(); // set as output
		writeBitOff();
		us_delay(20);
		*/
	}
}

void initReadTemp()
{
    uint32_t noOfSlots = 0;
	oneWire_init();
    writeByte(0xCC); // skip ROM
    writeByte(0x44); // convert t
    while( readSlot() == 0 ) {
    	noOfSlots++;
    	us_delay(10);
    }
    printf("Sl:%u\n",noOfSlots);
}

float readTemperature()
{
	uint8_t retVal = oneWire_init();
    writeByte(0xCC); // skip ROM
    writeByte(0xBE); // Read Scratchpad
    temp_l = readByte();
    temp_h = readByte();
    uint8_t b3 = readByte();
    uint8_t b4 = readByte();
    uint8_t b5 = readByte();
    uint8_t b6 = readByte();
    uint8_t b7 = readByte();
    uint8_t b8 = readByte();
    temp = (int16_t)((temp_h << 8) | temp_l);
    temperature = (float)temp / 16;
    printf("retVal=%u    %u %u %u %u %u ",retVal,temp_l,temp_h,b3,b4,b5);
    printf(" %u %u %u\n",b6,b7,b8);
    return temperature;
}