GPIO34-39 can only be set as input mode and do not have software pullup or pulldown functions.
Search found 132 matches
- Mon Dec 02, 2019 8:29 pm
- Forum: ESP32 Arduino
- Topic: SPI driver corrupted GPIO39, GPIO36, GPIO34, GPIO35
- Replies: 2
- Views: 113
Re: SPI driver corrupted GPIO39, GPIO36, GPIO34, GPIO35
https://docs.espressif.com/projects/esp ... /gpio.html
- Tue Nov 12, 2019 11:03 pm
- Forum: ESP32 Arduino
- Topic: Blocking code to Non-Blocking help.
- Replies: 3
- Views: 250
Re: Blocking code to Non-Blocking help.
100% what he said^^^^^^^^^^^ I know complete waste of an ESP but that all I am using at the moment: #include "sdkconfig.h" #include "esp32/ulp.h" #include "driver/rtc_io.h" #include "esp_system.h" //This inclusion configures the peripherals in the ESP system. #include "freertos/FreeRTOS.h" #include ...
- Tue Nov 12, 2019 12:28 pm
- Forum: ESP32 Arduino
- Topic: store data in Flash (not Spiff)
- Replies: 10
- Views: 2116
Re: store data in Flash (not Spiff)
One can use the EEPROM library to store data in flash.
- Mon Nov 11, 2019 8:16 pm
- Forum: ESP32 Arduino
- Topic: Restart if Guru Meditation Error
- Replies: 7
- Views: 700
Re: Restart if Guru Meditation Error
You might want to hunt down and install the "esp exception decoder arduino", it could provide some help with hunting down the issue.
- Fri Nov 08, 2019 4:52 pm
- Forum: ESP32 Arduino
- Topic: The Ring
- Replies: 0
- Views: 148
The Ring
Buffer. My current thing do is about using a Ring Buffer. void fSendSerialToBrain( void *pvParameters ) { CAN_frame_t rx_frame; xSemaphoreGive ( sema_SendSerialToBrain ); bool PassTwo = false; for (;;) { xEventGroupWaitBits (eg, evtSendSerialToBrain, pdTRUE, pdTRUE, portMAX_DELAY); size_t item_size;...
- Fri Nov 08, 2019 2:17 pm
- Forum: ESP32 Arduino
- Topic: External ADC Question
- Replies: 6
- Views: 472
Re: External ADC Question
Also, I found that by sampling the ADC regularly once a mS or so, and applying the Simple Kalman filter to the results https://github.com/denyssene/SimpleKalmanFilter , the output gets real smooth. Even if the A:D converter values are not displayed regularly, like once a second, getting several read...
- Fri Nov 08, 2019 2:56 am
- Forum: ESP32 Arduino
- Topic: ESP Now values not being received properly on receiver side.
- Replies: 3
- Views: 249
Re: ESP Now values not being received properly on receiver side.
This is not true // For ESP32 the GPIO pwm pins are: 0,1,2,3,4,6,7,8,9,10,11,12,14,16,17,18,19,21,22,23,25,26,27,32,33,34,35,36,39 All the GPIO pins above 32 are input only // For ESP32 the GPIO pwm pins are: 0,1,2,3,4,6,7,8,9,10,11,12,14,16,17,18,19,21,22,23,25,26,27,32 is correct. Anyway, not used...
- Fri Nov 08, 2019 2:49 am
- Forum: ESP32 Arduino
- Topic: ESP Now values not being received properly on receiver side.
- Replies: 3
- Views: 249
Re: ESP Now values not being received properly on receiver side.
Just courious if you expect these values to go negative uint16_t ACW = total[0] / numReadings; // AzimuthCW uint16_t ACCW = total[1] / numReadings; // AzimuthCCW uint16_t ECW = total[2] / numReadings; // ElevationCW uint16_t ECCW = total[3] / numReadings; // ElevationCCW ? A uint16_t cannot store a ...
- Thu Nov 07, 2019 4:17 pm
- Forum: ESP32 Arduino
- Topic: [SOLVED] SECOND SPI QUESTION
- Replies: 3
- Views: 270
Re: SECOND SPI QUESTION
I use the ESP32 SPI API to do the SPI thing. https://docs.espressif.com/projects/esp-idf/en/latest/api-reference/peripherals/spi_master.html here is the 'main' code #include "sdkconfig.h" // for log_x #include "esp_system.h" //This inclusion configures the peripherals in the ESP system. #include "es...
- Thu Nov 07, 2019 4:04 pm
- Forum: ESP32 Arduino
- Topic: External ADC Question
- Replies: 6
- Views: 472
Re: External ADC Question
I get great results from the built in A:D's and an example of the way I am using the ADC. #include <driver/adc.h> setup() { // https://dl.espressif.com/doc/esp-idf/latest/api-reference/peripherals/adc.html // set up A:D channels adc1_config_width(ADC_WIDTH_12Bit); adc1_config_channel_atten(ADC1_CHAN...