Unable to Serial Print and Serial Plot on Serial1 with STM32duino core ( Solved )

[TeguhTeknisi]

Hi,
Why i don't see anything on Serial Port 1 when using Serial Monitor or Serial Plotter when using STM32duino core?
when i using Roger core, i can see it.

Nevermind, its because i choose Board part number: Generic F103C6Tx
When i change to BluePill F103C6 (32K) , i can see it.
I thought, i have Bluepill clone, so i choose Generic F103C6Tx

Here the code i use to test

void setup() {
  Serial.begin(115200);

  pinMode(PC13, OUTPUT);
}

void loop() {
  Serial.println("Led Blynking....");
  digitalWrite(PC13, HIGH);
  delay(1000);
  digitalWrite(PC13, LOW);
  delay(1000);
}

I have try it using STM32F103C6T6 board and STM32F103C8T6 board

STM32F103C6T6

Board       : --
Chip ID: 0x412 
BootLoader protocol version: 2.2
Device name : STM32F101/F102/F103 Low-density
Flash size  : 32 KBytes (default)
Device type : MCU
Revision ID : --  
Device CPU  : Cortex-M3

STM32F103C8T6

Board       : --
Chip ID: 0x410 
BootLoader protocol version: 2.2
Device name : STM32F101/F102/F103 Medium-density
Flash size  : 128 KBytes (default)
Device type : MCU
Revision ID : --  
Device CPU  : Cortex-M3

OS Kubuntu Linux
Arduino IDE 1.6.19
STM32duino core 2.3.0
Using USB Serial CH340 to PA9 and PA10 to upload the code

Best regrads,
Teguh

[fpistm]

Hi,
this is normal.
BluePill defined default Serial instance to be mapped on Serial1 (PA9/PA10):

Arduino_Core_STM32/variants/STM32F1xx/F103C4T_F103C6(T-U)/variant_BLUEPILL_F103C6.h

Lines 125 to 137 in 75b051e

	// UART Definitions
	#ifndef SERIAL_UART_INSTANCE
	#define SERIAL_UART_INSTANCE 1
	#endif
	// Default pin used for generic 'Serial' instance
	// Mandatory for Firmata
	#ifndef PIN_SERIAL_RX
	#define PIN_SERIAL_RX PA10
	#endif
	#ifndef PIN_SERIAL_TX
	#define PIN_SERIAL_TX PA9
	#endif

While Generic mapped Serial to Serial2 (PA3/PA2):

Arduino_Core_STM32/variants/STM32F1xx/F103C4T_F103C6(T-U)/variant_generic.h

Lines 131 to 143 in 75b051e

	// UART Definitions
	#ifndef SERIAL_UART_INSTANCE
	#define SERIAL_UART_INSTANCE 2
	#endif
	// Default pin used for generic 'Serial' instance
	// Mandatory for Firmata
	#ifndef PIN_SERIAL_RX
	#define PIN_SERIAL_RX PA3
	#endif
	#ifndef PIN_SERIAL_TX
	#define PIN_SERIAL_TX PA2
	#endif

See https://github.com/stm32duino/wiki/wiki/API#hardwareserial

By default, only one Serialx instance is available mapped to the generic Serial name.

[TeguhTeknisi]

Thanks @fpistm

Now i have to find out, why i cannot compile emonlib for stm32 ( openenergymonitor/STM32#20 )

[fpistm]

Thanks @fpistm

Now i have to find out, why i cannot compile emonlib for stm32 ( openenergymonitor/STM32#20 )

Looking quickly to this issue, your code seems wrong: PA_0 is type of PinName while Arduino deal with pin number. So you have to use PA0 which represent the pin number. Same for PA_1 which sould be PA1

-  emon1.voltage(PA_0, 268.97, 1.7);  // Voltage: input pin, calibration, phase_shift
-  emon1.current(PA_1, 60.606);       // Current: input pin, calibration.
+  emon1.voltage(PA0, 268.97, 1.7);  // Voltage: input pin, calibration, phase_shift
+  emon1.current(PA1, 60.606);       // Current: input pin, calibration.