Hello After printf, I have a similar problem with scanf ()or gets() : none of them waits and let me key in what I want, the program skip to the next instruction. I have read I should use the esp_vfs_dev_uart_use_driver() function but, if I do so, my ESP32 reboots when it reaches the scanf() or the g...

Tank you very much ESP_ulipe ans ESP_Sprite for yours replies and specially for the image of the cannon/mosquito ! I realize now that the FreeRtos port on the ESP32 is quite different from what is explained in the "Mastering FreeRTOS" paper. Can one of them send me of reference where I can find info...

Hello everybody I am getting started with FreeRTOS and for my firs try (following the pdf "Mastering FreeRTOS") I made a task which displays a string on the monitor. Since I did not found the vPrintString() int he ESP32 port, I wrote : void vPrintString( const char *pcString ){ vTaskSuspendAll(); //...

Thank you very much for all your replies !

I see a little bit clear about this problem.

Oh thank you very much !
It was the flow control material which was ON
I put it OFF and all is OK.

But do you know wher I ca find documentation on these ROM functions ?

Best regards

Hello and thank you for your quick answer You have swapped idy.py for minicom.exe. That's all. I don't understand what you are meaning by "swap". I type idf.py flash and then minicom without .exe for I work with linux Probably your minicom serial port settings are wrong, baud rate, parity etc? If yo...

Hello everybody As I wanted a mean to drive a program with a simple char key pressed, and after searching the web, I found the uart_rx_one_char and uart_rx_one_char_block functions. In order to wait a char, I can use each of these functions in a task and they work like a charm when I use idf.py flas...

Hello and Thank you for these great explanations ! But I have a question about the variables used in a such ISR tagged as IRAM_ATTR. I have read in the doc that they must be tagged as DRAM_ATTR. Can someone explain why, and the risk if we do not so ? I tried with a counter increment by an ISR, with ...

Hello I think than it is OK with the following init. I use MCPWM but with only one timer : TIMER_0 The three Operator are linked to TIMER_0 On GPIO_PWM0A_OUT, I get your pin1 signal On GPIO_PWM1A_OUT, I get your pin2 signal The third pin is just for me to control I used huge prescaler for i have no ...

Hello

did you try to use MCPWM and an XOR gate ?

• with TIMER_0, you cant get the first signal : (1 0 0 0) for pin 1
• with TIMER_1, you can get the two signals : (1 1 0 0) and (1 1 1 0) of which the XOR gives pin 2

Is it not good for you ?

Best regards