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https://github.com/pvvx/RTL00_WEB.git
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56 lines
1.4 KiB
C
56 lines
1.4 KiB
C
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/*
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* i2c_drv.h
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*
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* Created on: 02/05/2017.
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* Author: pvvx
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*/
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#ifndef PROJECT_INC_DRIVER_I2C_DRV_H_
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#define PROJECT_INC_DRIVER_I2C_DRV_H_
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#include "device.h"
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typedef struct _I2C_HND_ {
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signed char status;
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unsigned char idx;
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unsigned char io_sel;
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unsigned char mode; // if(I2C_FIXED_SPEED_MODE != 0) user set -> i2c_mode_e
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void * base_regs;
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} i2c_drv_t, *i2c_drv_p;
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typedef enum
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{
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DRV_I2C_OFF = 0, // IC I2C DeInit
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DRV_I2C_OK = 0, // DRV ret Ok
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DRV_I2C_IC_OFF = 1, // IC I2C Off
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DRV_I2C_IC_ENABLE = 2, // IC I2C On
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DRV_I2C_ERR = -1, // DRV ret err
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DRV_I2C_ABORT = -1, // IC I2C Abort
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DRV_I2C_TIMEOUT = -3 // IC I2C / DRV ret Timeout
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} _i2c_status_e;
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typedef enum
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{
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DRV_I2C_SS_MODE = 1, // Standard Mode (100 Kbps)
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DRV_I2C_FS_MODE = 2, // Fast Mode (400 Kbps)
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DRV_I2C_HS_MODE = 3 // Fast Mode Plus (1 Mbps)
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} _i2c_mode_e;
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#define DRV_I2C_POOL_TIMEOUT 16384
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#define _i2c_deinit(p) _i2c_ic_off(p)
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// Setup
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int _i2c_setup(i2c_drv_t *pi2c, PinName sda, PinName scl, unsigned char mode); // _i2c_mode_e
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int _i2c_set_speed(i2c_drv_t *pi2c, uint32 clk_hz);
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// Work
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int _i2c_init(i2c_drv_t *pi2c);
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int _i2c_write(i2c_drv_t *pi2c, uint32 address, const char *data, int length, int stop);
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int _i2c_read(i2c_drv_t *pi2c, uint32 address, const char *data, int length, int stop);
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// Utils
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int _i2c_break(i2c_drv_t *pi2c);
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void _i2c_ic_off(i2c_drv_t *pi2c);
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#endif /* PROJECT_INC_DRIVER_I2C_DRV_H_ */
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