I found some answers that didn't solve my issue for STM32F302.
I configured the debug run as follows, to printf() in the SWV ITM Data Console:
IMG-Debug_Config
I implemented the _write function as follows:
int _write(int file, char *ptr, int len)
{
int DataIdx;
for (DataIdx = 0; DataIdx < len; DataIdx++)
{
ITM_SendChar((*ptr++));
}
return len;
}
And tried to setup the sys clock for "Asynchronous Trace" and "Serial Wire", none worked and I keep getting the same output (SWV Graph does not work either):
IMG-SWV_Output
Any suggestion about this issue? I just want to debug the variable to make sure I'm getting the correct measurement.
PS. Just a brief of my project: An ADC for a light sensor. I need to generate a graph from a laser sample measurement. Make this measurement with the STM32 and a photodiode, finish the measurement and send the .csv or .txt from USB to a computer to analyse the data.
I found what my problem was:
My "Core Clock (MHz)", in the debug settings, was wrong and that's why my SWV was not working properly
If no SWV data - you need to connect the SWO pin to ST-LINKV2. The SWV data transmission is on the SWO pin. On my STM32F3DISCOVERY, the SB10 was not soldered, SB10 connecting the PB3 SWO pin to the T_SWO debugger net. After soldering SB10 SWV work perfectly.
Related
I started using Visual Studio 2022 with Visual Micro, Arduino 1.6/1.8 as my new Arduino IDE, because I needed some extra features, that the original Arduino IDE does not provide.
To plot a graph, I am using the breakpoint command {#Plot.windowName.graphName variable} to print out the graph for my variable x with x = sin(2i), i being incremented by 0.01 every cycle by a for loop.
Here is my code:
double x;
void setup() {
Serial.begin(115200);
Serial.println("Hello, World!");
}
void loop() {
float i;
for (i = 0; i < 1000; i=i+0.01) {
x = sin(2*i);
Serial.println(x);
delay(50);
}
}
Here is a picture of the breakpoint command:
The graph this outputs looks jagged and has cyclically occurring lags every 1.5 second.
Where might this originate from?
Is it the Visual Micro software, the speed/noisiness of the serial connection (bad cable, etc.) or the Arduino Uno being overloaded by that?
I already tried changing the data rates as recommended in the answer of visualmicro.
Unfortunately it is not about the data rate itself.
The Serial Debugger in Visual Micro throttles the data coming from the sketch to prevent the PC becoming overloaded with Serial data.
If you enable the vMicro > Debugger > Full Speed (no throttle), this should speed up the data coming in.
Also the interval the chart refreshes at can be changed from the controls above it, in this scenario "At rate of incoming data" would be best suited.
I am developping a Firmware on various STM32L4 Nucleo boards with Atollic Truestudio IDE (basically Eclipse). Until now I was using printf through UART, thanks to the Virtual COM port.
I want to migrate to printf using STM32 ITM.
More precisely I work on Nucleo-L4A6ZG. Debug is through a gdb server.
On Atollic I modified my Debug Configuration to enable SWV with a core clock of 80MHz. I've modified my startup script as described in STM32L4 reference manual as follows. I'm not sure it is necessary since TrueStudio/Eclipse allows to setup SWV from the GUI but seems easier this way:
# Set character encoding
set host-charset CP1252
set target-charset CP1252
# Reset to known state
monitor reset
# Load the program executable
load
# Reset the chip to get to a known state. Remove "monitor reset" command
# if the code is not located at default address and does not run by reset.
monitor reset
# Enable Debug connection in low power modes (DBGMCU->CR) + TPIU for SWV
set *0xE0042004 = (*0xE0042004) | 0x67
# Write 0xC5ACCE55 to the ITM Lock Access Register to unlock the write access to the ITM registers
set *0xE0000FB0 =0xC5ACCE55
# Write 0x00010005 to the ITM Trace Control Register to enable the ITM with Synchronous enabled and an ATB ID different from 0x00
set *0xE0000E80= 0x00010005
# Write 0x1 to the ITM Trace Enable Register to enable the Stimulus Port 0
set *0xE0000E00= (*0xE0000E00) | 0x1
#write 1 to ITM trace privilege register to unmask Stimulus ports 7:0
set *0xE0000E40= (*0xE0000E40) | 0x1
# Set a breakpoint at main().
tbreak main
# Run to the breakpoint.
continue
I've modified my _write function as follows:
static inline unsigned long ITM_SendChar (unsigned long ch)
{
if (((ITM->TCR & ITM_TCR_ITMENA_Msk) != 0UL) && /* ITM enabled */
((ITM->TER & 1UL ) != 0UL) ) /* ITM Port #0 enabled */
{
while (ITM->PORT[0U].u32 == 0UL)
{
__asm("nop");
}
ITM->PORT[0U].u8 = (uint8_t)ch;
}
return (ch);
}
int _write(int file, char *ptr, int len)
{
//return usart_write(platform_get_console(), (u8 *)ptr, len);
int i=0;
for(i=0 ; i<len ; i++)
ITM_SendChar((*ptr++));
return len;
}
Debugging step by step I see that I get at line ITM->PORT[0U].u8 = (uint8_t)ch;
Finally I start the trace in the SWV console in the IDE but I get no output.
Any idea what I am missing ? What about the core clock of the SWV ? I'm not sure what it corresponds to.
I faced a similar situation on my Nucleo-F103RB. What got this working was selecting "Trace Asynchronous" debug option on CubeMX and not "Serial Wire". The trace asynchronous debug dedicates the PB3 pin as a SWO pin.
Then setup the debug configuration as follows:
Project debug configuration to enable Serial Wire Viewer (SWV)
Also, I'd defined the write function inside of the main.c file itself, changing the definition in the syscalls.c wouldn't work.
And finally when debugging the project, under the "Serial Wire Viewer settings" only enable (check) port 0 on ITM Stimulus Ports, like so:
Serial Wire Viewer settings in Debug perpective
One thing I noted when I had enabled the prescaler for timestamps and some trace events, the trace output would not show quite a few trace logs.
Anyone else finding this - The Nucleo-32 line of Nucleo development boards inexplicably DO NOT have the SWO pin routed to the MCU. The SWO pin is necessary for all the SWV features, so it will not work by design. The higher pin-count Nucleo boards seem to have it routed.
See for yourself:
https://www.st.com/resource/en/user_manual/dm00231744-stm32-nucleo32-boards-mb1180-stmicroelectronics.pdf (Nucleo-32)
https://www.st.com/resource/en/user_manual/dm00105823-stm32-nucleo-64-boards-mb1136-stmicroelectronics.pdf (Nucleo-64)
Small-factor Nucleo-32 pin boards generally do not support SWO/SWV but there is one exception: Nucleo-STM32G431KB. As of September 2021 this is probably the only small-factor Nucleo-32 pin, quite powerful board supporting ST-LINK V3 and SWO. See MB1430 schematic.
Although my response is loosely related to the original question pertaining to the Nucleo-L4A6ZG (144 pin large-factor), it may help someone finding this thread.
Just to mention that the ITM printf works perfectly on Keil IDE. Nothing particular to setup, just implement the ITM_SendChar function as showed in my first post and open the debug printf window.
I am currently learning the PIC. I am using PIC18F46K22. I want to send commands from my phone to the PIC using Bluetooth HC06 Module. On Arduino, everything works fine. However, when i switch to PIC, it isnt working. It is connecting but the Rx and Tx dont perform. After comparing with the arduino code, the only problem i see is the blueooth initialization. I have connected the Tx and Rx pins of bluetooth to Rx and Tx of the PIC, respectively. All the websites i read are the same, and i already tried them so i am clueless what to do. Please, any help in what is the probelm is much much appreciated.
This is my code:
char receive;
void main(){
TRISA=0x00;
ANSELA=0;
PORTA.F0=0;
UART1_Init(9600);
Delay_ms(100);
while(1){
if (UART1_Data_Ready()) {
receive = UART1_Read();
if (receive=='1') {
PORTA.F0=1;
}
else{
PORTA.F0=0;
}
}
}
}
First,you didnt say what compiler you are using? Did u make debug your code ? Maybe your clock settings are wrong. And it is due to set wrong baudrate. Check your initializing for uart.
You have a very simple mistake, and that should be the problem. PORTC is by default initialized as an analog Port. Therefore, Tx and Rx pins do no perform their function. In order to disable PORTC as analog (configure as digital), with PIC18F46K22, the function would be ANSELC=0;
Hope that helps!
I started adventure with arduino and programming 2 months ago.So, I am new in this topics.
Until now I realized few projects including Blynk connected with arduino. The last one was similar to one described in topic but I used the ENC28j60 instead of ESP8266 module and then it worked fine.
The problem started with ESP module.
Short description of project:
The main idea is to control AC light with Blynk App support.
First of all I made a connection according to picture below:
As power source I used the USB phone charger connected with step by voltage converter to get in final the 3.3V source.
I additionally connected the Arduino Uno with relay module like this:
Arduino ====> Relay module
5V ====> VCC
GND ====> GND
Pin 5 ====> IN1
Everythink you can see in pictures below (sorry for quality)
And for now I did almost every step (with so many problems). Here I mean:
1. I checked if arduino is connected with ESP module by serial port -> system report "ready" status.
2. I upload the below (template) Arduino IDE sketch for my project:
#define BLYNK_PRINT Serial
#include <ESP8266WiFi.h>
#include <BlynkSimpleEsp8266.h>
// You should get Auth Token in the Blynk App.
// Go to the Project Settings (nut icon).
char auth[] = "***";
// Your WiFi credentials.
// Set password to "" for open networks.
char ssid[] = "***";
char pass[] = "***";
void setup()
{
// Debug console--
Serial.begin(9600);
Blynk.begin(auth, ssid, pass);
}
void loop()
{
Blynk.run();
}
And finally I started the New project in Blynk. I set the Arduino uno as a hardware model and WiFi as connection type. Then I added the Button and set the Output to D5.
And now (close to the end of project) I met with a problem. After pushing the connect button (in up-right corner) I receive the information that device is connected (Online). Then when I try to push the button to Active Relay - nothing happens.
Whats more. I tried with different pins on Arduino with the same results. And I don't know why (probably because I have still small knowladge) but when I set the Button output value to D2 - after connection when I push it then the diode on ESP module Turn OFF and Turn ON.
I tried to find solution on this forum and in many other places for last 3 days but without any results. That's why I decided to ask You for help. Do you know what did I wrong or what should I add to project to make connection between the Blynk and relay work correct?
Write if you will need some more or detailed information from my side.
Why are you using both the uno and the esp? You can just use the esp instead of the combo, will make your project less power hungry and smaller. If you wonder about using just the esp, you can use the nodemcu boards (which can be found for less that 4€ per unit in China).
I've some example sketches for this (with temperature and humidity), if you want to take a look at those.
When looking at the pictures and code you have postet, it seems that you have flashed the ESP with a Arduino sketch. This is fine if you would like to activate the relay directly with the ESP (without the Arduino UNO).
Then you just have to connect the relay to the ESP instead of to the Arduino. Unfortunately not all relay boards can operate with the 3.3V logic that the ESP supplies, but maybe you'r lucky.
On the other hand, if you would like to use the Arduino UNO with the ESP as Wi-Fi, then you would have to reflash the ESP with the original AT firmware. Then you could connect it to the Arduino and use a sketch that looks something like this.
#define BLYNK_PRINT Serial
#include <ESP8266_Lib.h>
#include <BlynkSimpleShieldEsp8266.h>
char auth[] = "YourAuthToken";
char ssid[] = "YourNetworkName";
char pass[] = "YourPassword";
#include <SoftwareSerial.h>
SoftwareSerial EspSerial(2, 3);
// pin 3 connected to ESP RX and pin 2 connected to ESP TX
// Your ESP8266 baud rate:
#define ESP8266_BAUD 115200
ESP8266 wifi(&EspSerial);
void setup()
{
// Debug console
Serial.begin(9600);
delay(10);
// Set ESP8266 baud rate
EspSerial.begin(ESP8266_BAUD);
delay(10);
Blynk.begin(auth, wifi, ssid, pass);
}
void loop()
{
Blynk.run();
}
And you should remove the connection between RST and GND on the Arduino
I am a beginner in AT Mega-1284P Xplained.
I want to turn an LED on and then off (say, LED0) after some specified time in AT Mega 1284P Xplained board from ATMEL. To my surprise, I found no official documentation for this rudimentary task but several different function calls - all of which failed compilation - searching on the web.
Please mention the API call as well as the header file that needs to be included for this. I am using AVR Studio 6.
I will assume a led is connected to pin 0 at port b on the AtMega1284P. The following program should make the led blink.
#include <util/delay.h>
#include <avr/io.h>
int main() {
// Set the pin 0 at port B as output
DDRB |= (1<<PB0);
while(1) {
// Turn led on by setting corresponding bit high in the PORTB register.
PORTB |= (1<<PB0);
_delay_ms(500);
// Turn led off by setting corresponding bit low in the PORTB register.
PORTB &= ~(1<<PB0);
_delay_ms(500);
}
}
Answering my own question: I found Atmel had an example code that covered a bunch of sensors and other peripheral components including LEDs for Mega-1284P. The links are link and link. Besides, very hard to find locations (they did not show up on web searches), the websites are _very_slow. Atmel, are you listening?