Compatibility issue with STM32 F030CCTx

[kramzarales]

Description

The folowing code is meant to read data from a DS18B20 temperature sensor. I upload it to a custom board that has a STM32 F030CCT8 chip on it

When i compile it for the STM32 F030C8Tx (bluepill) it compiles without errors and the code works without issues.

When i compile it for the F030CCTx board (the correct hardwere) it also compiles and runs without errors, but it does not recieve data from the sensor (or can not interpret the signal corectly). I have checked the pin with an osciloscope and found out there is a PWM signal coming from the board.

Steps To Reproduce Problem

I am using a custom board, but the code and the board works. The issue is only with board compatibility.

Hardware & Software

Board: custom board/breadboard Arduino IDE version: 1.8.15 Version info & package name: Generic STM32F0 series Operating system & version: win10 Any other software or hardware? OneWire sensor DS18B20

Arduino Sketch:

include

include

HardwareSerial Serial_MODBUS_S1(USART1); OneWire Wire_pin1(PA13);

byte i; byte present = 0; byte type_s; byte data[9]; byte data1[9]; byte data2[9]; int16_t raw; byte cfg;

byte addr[8]; byte addr2[] = {0x28, 0x50, 0x9F, 0xEB, 0x09, 0x00, 0x00, 0xBB}; //28 B8 1F A9 8 0 0 B4 byte addr1[] = {0x28, 0xB8, 0x1F, 0xA9, 0x08, 0x00, 0x00, 0xB4};

float celsius, fahrenheit;

void read_OneWire_1(){

Serial_MODBUS_S1.print("SENSOR 1 ADDR ="); for( i = 0; i < 8; i++) { Serial_MODBUS_S1.write(' '); Serial_MODBUS_S1.print(addr1[i], HEX);

} Serial_MODBUS_S1.println(""); Serial_MODBUS_S1.print("SENSOR 2 ADDR ="); for( i = 0; i < 8; i++) { Serial_MODBUS_S1.write(' '); Serial_MODBUS_S1.print(addr2[i], HEX);

} Serial_MODBUS_S1.println("");

Wire_pin1.reset(); Wire_pin1.select(addr1); Wire_pin1.write(0x44, 1);
present = Wire_pin1.reset(); Wire_pin1.select(addr1);
Wire_pin1.write(0xBE); // Read Scratchpad for ( i = 0; i < 9; i++) data[i] = Wire_pin1.read();

raw = 0; raw = (data[1] << 8) | data[0]; if (type_s) { raw = raw << 3; // 9 bit resolution default if (data[7] == 0x10) { raw = (raw & 0xFFF0) + 12 - data[6]; } } else { cfg = (data[4] & 0x60); if (cfg == 0x00) raw = raw & ~7; // 9 bit resolution, 93.75 ms else if (cfg == 0x20) raw = raw & ~3; // 10 bit res, 187.5 ms else if (cfg == 0x40) raw = raw & ~1; // 11 bit res, 375 ms } celsius = (float)raw / 16.0;

Serial_MODBUS_S1.print(" Temperature 1= "); Serial_MODBUS_S1.println(celsius); Serial_MODBUS_S1.println("");

Wire_pin1.reset(); Wire_pin1.select(addr2); Wire_pin1.write(0x44, 1);

present = Wire_pin1.reset(); Wire_pin1.select(addr2);
Wire_pin1.write(0xBE); // Read Scratchpad

for ( i = 0; i < 9; i++) { // we need 9 bytes data[i] = Wire_pin1.read(); } raw = 0; raw = (data[1] << 8) | data[0]; if (type_s) { raw = raw << 3; // 9 bit resolution default if (data[7] == 0x10) { raw = (raw & 0xFFF0) + 12 - data[6]; } } else { cfg = (data[4] & 0x60); if (cfg == 0x00) raw = raw & ~7; // 9 bit resolution, 93.75 ms else if (cfg == 0x20) raw = raw & ~3; // 10 bit res, 187.5 ms else if (cfg == 0x40) raw = raw & ~1; // 11 bit res, 375 ms } celsius = (float)raw / 16.0; Serial_MODBUS_S1.print(" Temperature 2 = "); Serial_MODBUS_S1.println(celsius); Serial_MODBUS_S1.println("");

}

void setup(void) { Serial_MODBUS_S1.begin(9600); Serial_MODBUS_S1.print("start"); pinMode(PB0, OUTPUT); }

void loop(void) { read_OneWire_1(); delay(100);

}