![]() ![]() I’m probably doing something dumb, but I’m not seeing it. This is one of the most common peripherals used to connect sensors, EEPROMs, RTC, ADC, DAC, displays, OLED, and many other devices and microcontrollers. I can tell that something is happening, because the code completes in 3-4 seconds with no pin connections, it takes a bit over 60 seconds (as expected to scan 127 addresses with a 1/2 second timeout). About I2C (Inter-Integrated Circuit) / TWI (Two-wire Interface) is a widely used serial communication to connect devices in a short distance. I’ve tried it at 100KHz, 400KHz, 1MHz with the same result. Seed.PrintLine("I2C device found at address %x !", prAddress) Īnd the output when the Seed is connected (pins 12/13 on the pinout): Daisy is online Int prAddress = (address < 16) ? 0 : address = _i2c.TransmitBlocking(address, &testData, 1, 500) Static constexpr I2CHandle::Config _i2c_configįor(unsigned char address = 1 address < 127 address++) Here’s my libdaisy version: #include "daisy_seed.h" Serial.println("No I2C devices found\n") ĭelay(5000) // wait 5 seconds for next scanĪnd the output (connected via A4/A5 to 3 daisy-chained (!) GPIO boards: Scanning. Serial.print("I2C device found at address 0x") Here’s the i2cScanner code from Arduino that I’m porting: #include įor(byte address = 1 address < 127 address++ ) I wonder if you’d have a look at my code? mcspr Migrate from astyle to clang-format ( 8464) Latest commit 19b7a29 on History. The basic START-STOP pattern is pretty easy to implement. You probably are not doing this directly in your code, but are using an existing one, like the Wire library provided by Arduino cores. ![]() I thought I understood everything based on your comments, Stephen, but I’m having no success. This is another detail that seems simple, but can cause some grief when actually implementing an I2C library. ![]()
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