Module hal::i2c

#include <std/hal/i2c.h> source

I2C HAL Polling-based I2C master driver. Freestanding-safe.

I2cBus<C> is generic over the I2C block, a compile-time chip type:

I2cGeneric    reference layout: DATA +0x00, STATUS +0x04 (bit 0 busy,
              bit 1 ACK, bit 2 error), CTRL +0x08 (1 START, 2 STOP,
              4 SEND, 8 READ+ACK, 16 READ+NACK), ADDR +0x0C, SPEED +0x10
Stm32F4I2c    STM32F1/F2/F4 I2C ("v1": CR1/CR2/DR/SR1/SR2/CCR/TRISE),
              standard (<= 100 kHz) and fast (<= 400 kHz) mode

Every transfer ends with STOP, also when it fails, so the bus is released.

Structs

I2cGeneric
Stm32F4I2c
I2cBus

Traits

I2cChip What an I2C controller type provides; I2cBus<C> requires it.

Macros

I2C_OK	I2C result codes
I2C_NACK
I2C_ERROR