Error serial does not name a type

Description of problem [x] PlatformIO Core. Hello, I use PlatformIO to compile & update code for a remote servo system on an STM32F411-based system. Everything was working fine, but while worki...

Description of problem

[x] PlatformIO Core.

Hello, I use PlatformIO to compile & update code for a remote servo system on an STM32F411-based system. Everything was working fine, but while working on a new update something broke. So I reverted the project to the last stable release and I am still getting the same compiler error.

With the reverted build, platformio fails with:
ImportError: cannot import name 'Serial' from 'serial'
So then I downgraded to 4.3.3 and it failed with
'Serial' does not name a type; did you mean 'serial_t'?

Anyway, hopefully I haven’t made a big goof, but I’m not sure how to proceed.
I believe that it broke on the remote machine as well, but I will double check.

Configuration

Operating system:
Linux g7 5.4.0-42-generic platformio/platformio-core#46-Ubuntu SMP Fri Jul 10 00:24:02 UTC 2020 x86_64 x86_64 x86_64 GNU/Linux

PlatformIO Version (platformio --version):
4.3.4 & 4.3.3

; PlatformIO Project Configuration File
;
;   Build options: build flags, source filter
;   Upload options: custom upload port, speed and extra flags
;   Library options: dependencies, extra library storages
;   Advanced options: extra scripting
;
; Please visit documentation for the other options and examples
; http://docs.platformio.org/page/projectconf.html

[env:nucleo_f411re]
platform = ststm32
board = nucleo_f411re
framework = mbed
debug_tool = stlink
upload_protocol = stlink
build_flags = -ggdb -g3

Source file to reproduce issue:

#include "mbed.h"
#include "QEI.h"
//#include "../lib/UART_ISR.h"
#include "../lib/PinDefs.h"
#include "../lib/MotorTests.h"
#include "../lib/PID.h"

void serial_update(void);

void control_loop(void);
Ticker ticker;
void mot1_set(float);
void mot2_set(float);

Serial pc(PA_11, PA_12); //tx, rx;
PID pid1(0.0175, 0.0, 0.1, &wheel1, &ticker);
PID pid2(0.0134, 0.0, 0.1, &wheel2, &ticker);

int main(){

  pc.baud(PC_BAUD);

  buzzer.period(0.0015);
  buzzer = 0.5;
  wait_us(500000);
  buzzer = 0;

  m1in1 = 0;
  m1in2 = 1;
  m1d1 = 1;
  m1d1.period(.00005);

  m2in1 = 0;
  m2in2 = 1;
  m2d1 = 1;
  m2d1.period(.00005);

  //pc.attach(&rxIsr);
  ticker.attach_us(&control_loop, 5000.0);

  while(1) {
    serial_update();
  }
}

void control_loop(void){

  mot1_set(pid1.update());
  mot2_set(pid2.update());

}

// Updates PID setpoints from new serial input
void serial_update(void){
	//Only update if there is new line in the serial buffer
	//t.reset();
	if(newlineFlag == 1){
		string local;
		local = in1;
		newlineFlag = 0;

		//Check to see which wheel to update
		if((local.find(left) == 0) & (local.find(end_char) == local.length()-1)){
			local.erase(local.begin());
			local.erase(local.end()-1);
			int dl;
			dl = std::atoi(local.c_str());
			pid2.setpoint += dl;

      pc.printf("L:%irn", dl);

		}

		if((local.find(right) == 0) & (local.find(end_char) == local.length()-1)){
			local.erase(local.begin());
			local.erase(local.end()-1);
			int dr;
			dr = std::atoi(local.c_str());
			pid1.setpoint -= dr;

      pc.printf("R:%irn", dr);
		}

    if((local.find(test_command) == 0) & (local.find(end_char) == local.length()-1)){
      test_t pid_test;
      local.erase(local.begin());
      local.erase(local.end()-1);
      const char * c_str = local.c_str();
      int side;
      sscanf(c_str, "%d,%f,%f,%f,%f", &side, &pid_test.p, &pid_test.i, &pid_test.d, &pid_test.setpoint);

      if (side == 1){
        pid1.tune(pid_test);
      }else if(side == 2){
        pid2.tune(pid_test);
      }


    }
  }
}

Compile Errors

Results with the newest version of platformio:

Processing nucleo_f411re (platform: ststm32; board: nucleo_f411re; framework: mbed)
-----------------------------------------------------------------------------------------------------
ImportError: cannot import name 'Serial' from 'serial' (/home/brett/anaconda3/lib/python3.7/site-packages/serial/__init__.py):
  File "/home/brett/anaconda3/lib/python3.7/site-packages/platformio/builder/main.py", line 89:
    env = DefaultEnvironment(**DEFAULT_ENV_OPTIONS)
  File "/home/brett/.platformio/packages/tool-scons/script/../engine/SCons/Defaults.py", line 88:
    _default_env = SCons.Environment.Environment(*args, **kw)
  File "/home/brett/.platformio/packages/tool-scons/script/../engine/SCons/Environment.py", line 990:
    apply_tools(self, tools, toolpath)
  File "/home/brett/.platformio/packages/tool-scons/script/../engine/SCons/Environment.py", line 102:
    env.Tool(tool)
  File "/home/brett/.platformio/packages/tool-scons/script/../engine/SCons/Environment.py", line 1809:
    tool = SCons.Tool.Tool(tool, toolpath, **kw)
  File "/home/brett/.platformio/packages/tool-scons/script/../engine/SCons/Tool/__init__.py", line 122:
    module = self._tool_module()
  File "/home/brett/.platformio/packages/tool-scons/script/../engine/SCons/Tool/__init__.py", line 239:
    module = spec.loader.load_module(spec.name)
  File "<frozen importlib._bootstrap_external>", line 407:
    
  File "<frozen importlib._bootstrap_external>", line 907:
    
  File "<frozen importlib._bootstrap_external>", line 732:
    
  File "<frozen importlib._bootstrap>", line 265:
    
  File "<frozen importlib._bootstrap>", line 696:
    
  File "<frozen importlib._bootstrap>", line 677:
    
  File "<frozen importlib._bootstrap_external>", line 728:
    
  File "<frozen importlib._bootstrap>", line 219:
    
  File "/home/brett/anaconda3/lib/python3.7/site-packages/platformio/builder/tools/pioupload.py", line 26:
    from serial import Serial, SerialException

So then I tried to rollback to version 4.3.3 and got a different error

***********************************************************************************
Obsolete PIO Core v4.3.3 is used (previous was 4.3.4)
Please remove multiple PIO Cores from a system:
https://docs.platformio.org/page/faq.html#multiple-pio-cores-in-a-system
***********************************************************************************
Processing nucleo_f411re (platform: ststm32; board: nucleo_f411re; framework: mbed)
-----------------------------------------------------------------------------------------------------
Verbose mode can be enabled via `-v, --verbose` option
CONFIGURATION: https://docs.platformio.org/page/boards/ststm32/nucleo_f411re.html
PLATFORM: ST STM32 8.0.0 > ST Nucleo F411RE
HARDWARE: STM32F411RET6 100MHz, 128KB RAM, 512KB Flash
DEBUG: Current (stlink) On-board (stlink) External (blackmagic, jlink)
PACKAGES: 
 - framework-mbed 6.60200.200722 (6.2.0) 
 - toolchain-gccarmnoneeabi 1.90201.191206 (9.2.1)
...
src/main.cpp: At global scope:
src/main.cpp:15:1: error: 'Serial' does not name a type; did you mean 'serial_t'?
Источник

Serial does not name a type error

—  Thu Mar 03, 2016 10:08 pm
#188511

When this sketch is executed this error results. What needs to be accomplished with this code is for 8 voltage readings from the 74HC4015 to be displayed on the serial monitor. I’m new to programming.

Thank you

AnalogMultiplexing:43: error: ‘Serial’ does not name a type

Serial.print(«Raw Value = » );

AnalogMultiplexing:44: error: ‘Serial’ does not name a type

Serial.print(RawValue);

^

exit status 1
‘Serial’ does not name a type

Code: Select all

int pin_Out_S0 = 8;
int pin_Out_S1 = 9;
int pin_Out_S2 = 10;
int pin_In_Mux1 = A0;
int Mux1_State[8] = {0};
//float Mux1_State[i] =0;
int RawValue=0;
float Voltage = 0;
void setup() {
  pinMode(pin_Out_S0, OUTPUT);
  pinMode(pin_Out_S1, OUTPUT);
  pinMode(pin_Out_S2, OUTPUT);
  pinMode(pin_In_Mux1, INPUT);
  Serial.begin(9600);
}

void loop() {
 RawValue = analogRead(pin_In_Mux1);
 Voltage = (RawValue * 5.0) / 1024; //scale the ADC
  updateMux1();
//Serial.println(Mux1_State);
  for(int i = 0; i < 8; i ++) {
    if(i == 7) {
      Serial.println(Mux1_State[i]);
    } else {
      Serial.print(Mux1_State[i]);
      Serial.print(",");
//   vout = (value * 5.0) / 1024.0;
    
    }
  }
}


void updateMux1 () {
  for (int i = 0; i < 8; i++){
    digitalWrite(pin_Out_S0, HIGH && (i & B00000001));
    digitalWrite(pin_Out_S1, HIGH && (i & B00000010));
    digitalWrite(pin_Out_S2, HIGH && (i & B00000100));
    Mux1_State[i] = analogRead(pin_In_Mux1);
  }
}
Serial.print("Raw  Value = " );
Serial.print(RawValue);

—  Fri Mar 04, 2016 9:38 am
#188513

That’s because it’s outside of Loop().

Code: Select all

    int pin_Out_S0 = 8;
    int pin_Out_S1 = 9;
    int pin_Out_S2 = 10;
    int pin_In_Mux1 = A0;
    int Mux1_State[8] = {0};
    //float Mux1_State[i] =0;
    int RawValue=0;
    float Voltage = 0;
    void setup() {
      pinMode(pin_Out_S0, OUTPUT);
      pinMode(pin_Out_S1, OUTPUT);
      pinMode(pin_Out_S2, OUTPUT);
      pinMode(pin_In_Mux1, INPUT);
      Serial.begin(9600);
    }

    void loop() {
     RawValue = analogRead(pin_In_Mux1);
     Voltage = (RawValue * 5.0) / 1024; //scale the ADC
      updateMux1();
    //Serial.println(Mux1_State);
      for(int i = 0; i < 8; i ++) {
        if(i == 7) {
          Serial.println(Mux1_State[i]);
        } else {
          Serial.print(Mux1_State[i]);
          Serial.print(",");
    //   vout = (value * 5.0) / 1024.0;
       
        }
      }
	Serial.print("Raw  Value = " );
    Serial.print(RawValue);
	}


    void updateMux1 () {
      for (int i = 0; i < 8; i++){
        digitalWrite(pin_Out_S0, HIGH && (i & B00000001));
        digitalWrite(pin_Out_S1, HIGH && (i & B00000010));
        digitalWrite(pin_Out_S2, HIGH && (i & B00000100));
        Mux1_State[i] = analogRead(pin_In_Mux1);
      }
    }

————————————————————————————————————————————————————
//codlink
Available for circuit and PCB design, just PM me!

Источник

Hello!

I am trying to read the voltage of my 3.7V battery connected to a Feather MO. I found this in the documentation here.
https://learn.adafruit.com/adafruit-fea … management

————————————————————————————————————————————————————————————————————————————

#define VBATPIN A7

float measuredvbat = analogRead(VBATPIN);
measuredvbat *= 2; // we divided by 2, so multiply back
measuredvbat *= 3.3; // Multiply by 3.3V, our reference voltage
measuredvbat /= 1024; // convert to voltage
Serial.print(«VBat: » ); Serial.println(measuredvbat);

————————————————————————————————————————————————————————————————————————————

I’m confused because it compiled yesterday with no problems, and today I tried to compile it, and I got the below error.

————————————————————————————————————————————————————————————————————————————

BAT:4:1: error: ‘measuredvbat’ does not name a type
measuredvbat *= 2; // we divided by 2, so multiply back
^
BAT: error: ‘measuredvbat’ does not name a type
measuredvbat *= 3.3; // Multiply by 3.3V, our reference voltage
^
BAT:6:1: error: ‘measuredvbat’ does not name a type
measuredvbat /= 1024; // convert to voltage
^
BAT:7:1: error: ‘Serial’ does not name a type
Serial.print(«VBat: » ); Serial.println(measuredvbat);
^
BAT:7:26: error: ‘Serial’ does not name a type
Serial.print(«VBat: » ); Serial.println(measuredvbat);
^
exit status 1
‘measuredvbat’ does not name a type

————————————————————————————————————————————————————————————————————————————

I am very confused. I was hoping someone could point me in the right direction. Thank you so much!!

📷
LukeP1042 Posts: 1Joined: Fri May 10, 2019 10:08 pm

Источник

Topic: SoftSerial example not compiling  (Read 9814 times)

Hi all!

I have a Digispark with a thermometer shield I designed. Now, I would like to make some reading to the sensor and send them to the computer. I would like to have a bidirectional communication between the PC and the Digispark. To do so, I thought that the SoftSerialExample would be a good starting point. However, I encountered some issues. First, there was a compiling error in line:

while (!Serial) {
    ; // wait for serial port to connect. Needed for Leonardo only
Telling me that:

tmp/arduino_modified_sketch_408992/SoftSerialExample.ino: In function 'void setup()':
SoftSerialExample:32: error: no match for 'operator!' (operand type is 'TinyDebugSerial')
    while (!Serial) {
           ^
/tmp/arduino_modified_sketch_408992/SoftSerialExample.ino:32:11: note: candidate is:
/tmp/arduino_modified_sketch_408992/SoftSerialExample.ino:32:11: note: operator!(bool) <built-in>
/tmp/arduino_modified_sketch_408992/SoftSerialExample.ino:32:11: note:   no known conversion for argument 1 from 'TinyDebugSerial' to 'bool'
exit status 1
no match for 'operator!' (operand type is 'TinyDebugSerial')

However, given that this line is needed for Leornardo only I commented it. Next, however, more compiling errors appear:

SoftSerialExample:37: error: 'Serial' does not name a type
   Serial.println("Goodnight moon!");
   ^
SoftSerialExample:40: error: 'mySerial' does not name a type
   mySerial.begin(4800);
   ^
SoftSerialExample:41: error: 'mySerial' does not name a type
   mySerial.println("Hello, world?");
   ^
SoftSerialExample:42: error: expected declaration before '}' token
 }
 ^
exit status 1
'Serial' does not name a type


I am clueless on how to fix it. Could you please give me some guidance? I am using Arduino IDE 1.8.5 on an Ubuntu 14.04 LTS.

Thanks in advance!
Jusep


Logged

Hello Jusep,

Did you create the serial object?

Something like

  #include <SoftSerial.h>                 // SoftSerial en TinyPinChange voor DigiSpark               
  #include <TinyPinChange.h>
  SoftSerial MySerial(RX, TX);     // RX, TX pins

Also the «}» error may be the problem. Sometimes the errors are not clear when something else is wrong and one } to many or too few may give all kind of errors….

Rob

Rob


Logged

Hi Rob,
I am using the example code provided when you install Digispark board on Arduino IDE. Of course, the serial object is created.
Talking with a friend some days ago he proposed to use DigiCDC library for this purpose, so I’ll give it a try.

/*
  Software serial multiple serial test

  Receives from the hardware serial, sends to software serial.
 Receives from software serial, sends to hardware serial.

  The circuit:
 * RX is digital pin 2 (connect to TX of other device)
 * TX is digital pin 3 (connect to RX of other device)

  created back in the mists of time
 modified 9 Apr 2012
 by Tom Igoe
 based on Mikal Hart's example

  This example code is in the public domain.

  <SoftSerial> adapted from <SoftwareSerial> for <TinyPinChange> library which allows sharing the Pin Change Interrupt Vector.
 Single difference with <SoftwareSerial>: add #include <TinyPinChange.h>  at the top of your sketch.
 RC Navy (2012): http://p.loussouarn.free.fr

  */
#include <SoftSerial.h>     /* Allows Pin Change Interrupt Vector Sharing */
#include <TinyPinChange.h>  /* Ne pas oublier d'inclure la librairie <TinyPinChange> qui est utilisee par la librairie <RcSeq> */

SoftSerial mySerial(2, 3); // RX, TX

void setup() 
{
 // Open serial communications and wait for port to open:
  Serial.begin(57600);
   while (!Serial) {
    ; // wait for serial port to connect. Needed for Leonardo only
  }

    Serial.println("Goodnight moon!");

  // set the data rate for the SoftwareSerial port
  mySerial.begin(4800);
  mySerial.println("Hello, world?");
}

void loop() // run over and over
{
  if (mySerial.available())
    Serial.write(mySerial.read());
  if (Serial.available())
    mySerial.write(Serial.read());
}


Logged

Источник

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