WebbIt is the same as the sequence generated by HAL_I2C_Master_Transmit(), except the MemAddress argument is sent after the slave address and before the first byte from data buffer. The following example uses the HAL_I2C_Mem_Write() function to write the value 0x01 to a register located at memory address 0x03 on the slave device. Notice that the … WebbHAL_I2C_Mem_Write(&hi2c1, 0x20<<1, 0x01, 1, 0x1, 1, 10000); Also several times changed combinations of sizes of the penultimate parameter of the function. The expander is working properly, checked through the Arduino. Entering identical register values on STM - the behavior is different. Question: What could be the error and how to fix it?
STM32 HAL - writing to EEPROM (I2C) - Stack Overflow
WebbI2C (spelled I squared C) is a standard that allows for easy communication between multiple devices (microcontrollers, memories, computer monitors, sensors, converters, … WebbWriting appears to be pretty straightforward using the HAL_I2C_Mem_Write function, so to write the value of 'a' into the first memory address on the chip I do the following (I think): uint8_t = 0x2a; HAL_I2C_Mem_Write (&hi2c1, (0b1010000 << 1), 0x00, I2C_MEMADD_SIZE_8BIT, &a, I2C_MEMADD_SIZE_8BIT, 1000); dr jeffrey rawnsley
STM32 I2C Tutorial – HAL Code Examples Slave & Master
WebbThis means that to do a write of a register, you send the I2C address of the device (1 byte), the internal register (1 byte) and then the data to be stored at that address. Some … WebbSTM32では、I2Cデバイスにデータを書き込む（送信する）関数と、読み出す（受信する）関数がそれぞれ用意されている。 書き込み関数 main.c HAL_StatusTypeDef HAL_I2C_Mem_Write( I2C_HandleTypeDef *hi2c, uint16_t DevAddress, uint16_t MemAddress, uint16_t MemAddSize, uint8_t *pData, uint16_t Size, uint32_t Timeout) {} … WebbSome I2C devices act as a memory device (or set of registers) that can be read from and written to. In this case there are two addresses associated with an I2C transaction: the peripheral address and the memory address. The following methods are convenience functions to communicate with such devices. dr jeffrey rediger author youtube