Search found 7 matches

by fofi144
Wed Jun 19, 2019 11:23 am
Forum: ESP-IDF
Topic: SPI Chipselect won't work
Replies: 0
Views: 3149

SPI Chipselect won't work

Hi :) I'm currently working on a little project that uses 4 LCDs (st7735 controller). They are connected as followed: Mosi=4 , SCK=14 , A0 = 5 , CS1=2 , CS2= 26, CS3= 25, CS4= 32 Problem: Only CS1 (GPIO2) will work. All other CS stay low. I can't think of any reason why :cry: This is my code. I also...
by fofi144
Mon Jan 28, 2019 9:40 am
Forum: ESP-IDF
Topic: Using Interrupts on the UART
Replies: 8
Views: 20342

Re: Using Interrupts on the UART

Any ideas?
by fofi144
Fri Jan 25, 2019 11:25 am
Forum: ESP-IDF
Topic: ESP-IDF Hardware Timers
Replies: 8
Views: 11920

Re: ESP-IDF Hardware Timers

Hi :) is there a way to set the counter of the hardware timer to a specific value during runtime? I would need it to synchronize two devices, that are sending messages over RF. Why?: Both of the devices have a internal timer running. It creates time-slices, that tell the devices when to send and whe...
by fofi144
Wed Jan 23, 2019 9:25 am
Forum: ESP-IDF
Topic: Using Interrupts on the UART
Replies: 8
Views: 20342

Re: Using Interrupts on the UART

Hi ESP_Sprite, thanks for the fast answer. You're right, this caused the triggering of the interrupt watchdog :oops: . So now I'm using the xTaskNotifyfromISR() function to unblock my handler task. Here's my current code: #include <stdio.h> #include "esp_types.h" #include "freertos/FreeRTOS.h" #incl...
by fofi144
Tue Jan 22, 2019 4:03 pm
Forum: ESP-IDF
Topic: Using Interrupts on the UART
Replies: 8
Views: 20342

Using Interrupts on the UART

Hi, I'm having some problems with the RX of the Uart. What i want to do: I want to detect a series of five 0x55 on a RS485-bus and trigger an interrupt. My data packets for testing look like this: 0x55|0x55|0x55|0x55|0x55|0x10|0x20|0x30|0x40|0xFF My little test project: #include "CT10_Transceive.h" ...
by fofi144
Sun Jan 20, 2019 12:53 pm
Forum: ESP-IDF
Topic: ESP-IDF Hardware Timers
Replies: 8
Views: 11920

Re: ESP-IDF Hardware Timers

Hello ESP_Sprite, thanks for your help and your really good explanations. I didn't pay attention to the static variable being used multiple times, as soon as using multiple timers. Now it's totally clear for me :oops: . So I corrected my code and everything works fine :) #include "HW_Timers2.h" //**...
by fofi144
Fri Jan 18, 2019 5:32 pm
Forum: ESP-IDF
Topic: ESP-IDF Hardware Timers
Replies: 8
Views: 11920

ESP-IDF Hardware Timers

Hi guys, this is my first post here. So if I'm in the wrong topic or anything else feel free to correct me ;) . Normally I am working with Atmel Xmega controllers, but as soon as i discovered the ESP32 I fell in love with it :D . So here I am, trying to understand FreeRtos and the ESP-IDF API. After...