Serial.println("And Rpi said let's there be light!") Message = message + digitalRead(remotereceiver) This delay is the same as on the Rpi code for synchronisation purpose. Recording 24 times the digital of the DATA pins before showing it This delay scrolls the message so if the message was received too early it correctly synchronize Remote Receiver are on Input mode / Leds on Ouput initialize serial communication at 9600 bits per second: My goal is to remotely transmit sensors information from an arduino to an Rpi (Message like : 34 21 54)Īs you'll surely undestand when you read the code i'm a complete noob when it comes to electronics and C++ / C (and english is not my native language )Ī video demonstration (subscribe if you want update on my Rpi projects) I will now worked on a way to transmit small message from the Rpi to the Arduino (and hopefully from the Arduino to the Rpi) So it is pretty cool but not what I wanted to do in the firsts place But if you used a remote while sending a message, the message can be corrupt. There is a lot of improvements to make but it works, I tried to used remote controls on it and it doesn't accidently put the leds on or off. I put a lot of 1111111111 between the message so it will not confused it with a garage remote. I plugged two leds on digital pin 7/10 on the arduino that are remotely controlled by the raspberry pi when it sends an binary code. I worked on the code, and I can now transmit orders to the arduino from an Raspberry Pi. _nsec = 220000 // value obtained by trial and error to match transmitterįor (int i = 0 i < strlen(szCode) i++) Function to send the output code to the RF transmitter connected to GPIO 7.įor (int iSend = 0 iSend < 10 iSend++) Printf("mmap error %d\n", (int)gpio_map) Gpio_mem += PAGE_SIZE - ((unsigned long)gpio_mem % PAGE_SIZE) If ((gpio_mem = (unsigned char*)malloc(BLOCK_SIZE + (PAGE_SIZE-1))) = NULL) Set up a memory regions to access GPIO INP_GPIO(7) // must use INP_GPIO before we can use OUT_GPIO
Set up gpi pointer for direct register access #define GPIO_CLR *(gpio+10) // clears bits which are 1 ignores bits which are 0 #define GPIO_SET *(gpio+7) // sets bits which are 1 ignores bits which are 0 Always use INP_GPIO(x) before using OUT_GPIO(x) or SET_GPIO_ALT(x,y) #define GPIO_BASE (BCM2708_PERI_BASE + 0x200000) /* GPIO controller */ Based on the example GPIO in C program by Dom and Gert.
RC Mains socket control program by Geoff Johnson. Code: Select all // g++ -o switch switch.cpp
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