738dca560f
In this commit the the barometer is commented out and is not used in the system. This part also has athe beginnings of the calibration functions for accel and gyro
124 lines
5.0 KiB
C
124 lines
5.0 KiB
C
/***************************************************************************
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* NAME: I2C.h *
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* AUTHOR: Lennart Eriksson *
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* PURPOSE: Enabole the I2C Communication channel on the Revo board *
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* INFORMATION: *
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* This file initilizes the I2C communication that can be used by barometer *
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* communication etc. *
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* *
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* GLOBAL VARIABLES: *
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* Variable Type Description *
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* -------- ---- ----------- *
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***************************************************************************/
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#ifndef DRIVERS_I2C_H_
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#define DRIVERS_I2C_H_
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#include "stm32f4xx.h"
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/******************************************************************************
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* BRIEF: Configure the I2C bus to be used *
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* INFORMATION: This function only implements I2C1 or I2C2 which are available *
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* on the REVO board *
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******************************************************************************/
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bool i2c_configure(I2C_TypeDef* i2c,
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I2C_HandleTypeDef* out_profile,
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uint32_t my_address);
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/******************************************************************************
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* BRIEF: Get data over the I2C bus *
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* INFORMATION: *
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* Since this system uses a 7 bit addressing mode we send the slave address *
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* in the first bytes 7 MSbs and then the LSb is set to 1 indicating that *
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* it is a receive command, after that the slave responds with a 1 bit ack and *
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* the data is sent one byte at a time with an acknowledge in between *
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* every byte, as per the standard. Returns true if successful *
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******************************************************************************/
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bool i2c_receive(I2C_HandleTypeDef* profile,
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uint8_t slave_address,
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uint8_t* buffer,
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uint32_t length);
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/******************************************************************************
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* BRIEF: Send data over the I2C bus *
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* INFORMATION: *
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* Since this system uses a 7 bit addressing mode we send the slave address *
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* in the first bytes 7 MSbs and then the LSb is set to 0 indicating that *
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* it is a send command, after that the slave responds with a 1 bit ack and *
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* the data is sent one byte at a time with an acknowledge in between *
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* every byte, as per the standard. Returns true if successful *
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******************************************************************************/
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bool i2c_send(I2C_HandleTypeDef* profile,
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uint8_t slave_address,
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uint8_t* data,
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uint32_t length);
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/******************************************************************************
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* BRIEF: Configure the I2C bus to be used *
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* INFORMATION: This function only implements I2C1 or I2C2 DMA which are *
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* available on the REVO board *
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******************************************************************************/
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bool i2c_configure_DMA(I2C_TypeDef *i2c,
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I2C_HandleTypeDef *out_profile,
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DMA_HandleTypeDef *out_rxDMA_profile,
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DMA_HandleTypeDef *out_txDMA_profile,
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uint32_t my_address);
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#endif /* DRIVERS_I2C_H_ */
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// ---------------------- I2C Working with the compas on the REVO board ------------------------------
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/*
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int main(void)
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{
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// Initialize the Hardware Abstraction Layer
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HAL_Init();
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init_system();
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I2C_HandleTypeDef i2c_profile;
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//---- COMPAS WORKING ----
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i2c_configure(I2C1, &i2c_profile, 0x56);
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uint32_t address = 0b00011110;
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uint8_t start_request_1[2] = { 0b00000000, 0b01110000 };
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uint8_t start_request_2[2] = { 0b00000001, 0b10100000 };
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uint8_t start_request_3[2] = { 0b00000010, 0b00000000 };
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uint8_t request_data[1] = { 0b00000110 };
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uint8_t reset_pointer_data[1] = { 0b00000011 };
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uint8_t response_data[6] = { 0x0 };
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// This sequence starts the compass by first initializing it with the first 2 send
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// The third is there to say that the system should be continous communication
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i2c_send(&i2c_profile, address, &start_request_1, 2);
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i2c_send(&i2c_profile, address, &start_request_2, 2);
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i2c_send(&i2c_profile, address, &start_request_3, 2);
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// Delay for at least 6 ms for system startup to finish
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HAL_Delay(10);
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while (1)
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{
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i2c_send(&i2c_profile, address, &request_data, 1);
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i2c_receive(&i2c_profile, address, &response_data, 6);
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i2c_send(&i2c_profile, address, &reset_pointer_data, 1);
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// HAL_Delay(100);
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if(response_data[0] != 0)
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response_data[0] = 0;
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}
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}
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*/
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