188 lines
7.4 KiB
C
188 lines
7.4 KiB
C
/*******************************************************************************
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@file i2c.h
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@brief Contains all functions support for i2c driver
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@version 0.0
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@date 25. Oct. 2017
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@author qing.han
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SDK_LICENSE
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*******************************************************************************/
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#ifndef __I2C__H__
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#define __I2C__H__
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#ifdef __cplusplus
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extern "C" {
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#endif
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/*******************************************************************************
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@ Module : pre-compile
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@ Description : NULL
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*******************************************************************************/
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#ifdef _I2C_CMD_
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#define I2C_Ext
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#else
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#define I2C_Ext extern
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#endif
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/*******************************************************************************
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@ Module : Includes
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@ Description : None
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*******************************************************************************/
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#include "types.h"
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#include "bus_dev.h"
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#include "gpio.h"
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#include "clock.h"
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#define I2C_USE_TIMEOUT 1
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#if(I2C_USE_TIMEOUT == 1)
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#define I2C_INIT_TOUT(to) int to = hal_systick()
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#define I2C_CHECK_TOUT(to, timeout, loginfo) {if(hal_ms_intv(to) > timeout){LOG(loginfo);return PPlus_ERR_TIMEOUT;}}
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#else
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#define I2C_INIT_TOUT(to)
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#define I2C_CHECK_TOUT(to, timeout, loginfo)
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#endif
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/*******************************************************************************
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@ Module : Macro Define
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@ Description : None
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*******************************************************************************/
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typedef enum
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{
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I2C_0 =0, //define master mode,1:master mode,0:salve mode
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I2C_1 =1 //define master mode,1:master mode,0:salve mode
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} i2c_dev_t;
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/*******************************************************************************
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@ Module : Macro Define
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@ Description : I2C_SLAVE_ADDR_DEF ---- as slave mode
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I2C_MASTER_ADDR_DEF --- as master mode addressing device
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*******************************************************************************/
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#define I2C_SLAVE_ADDR_DEF 0x10
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#define I2C_MASTER_ADDR_DEF I2C_SLAVE_ADDR_DEF
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/*******************************************************************************
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@ Module : I2C Buffer Length
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@ Description : relate to RX FIFO & TX FIFO
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*******************************************************************************/
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#define I2C_FIFO_DEPTH 8
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#define I2C_RX_TL_CNT I2C_FIFO_DEPTH
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#define I2C_TX_TL_CNT I2C_FIFO_DEPTH
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/*******************************************************************************
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@ Module : Macro Define
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@ Description : Which IIC To be used
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*******************************************************************************/
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#define USE_AP_I2CX I2C0 //define use i2c0 or i2c1,0:i2c0,1:i2c1
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/*******************************************************************************
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@ Module : Macro Define
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@ Description : None
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*******************************************************************************/
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#define I2C0_IRQ_ENABLE() *(volatile unsigned int *) 0xe000e100 |= BIT(12)
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#define I2C0_IRQ_DISABLE() *(volatile unsigned int *) 0xe000e100 &= ~BIT(12)
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#define I2C1_IRQ_ENABLE() *(volatile unsigned int *) 0xe000e100 |= BIT(13)
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#define I2C1_IRQ_DISABLE() *(volatile unsigned int *) 0xe000e100 &= ~BIT(13)
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#define I2C_READ_CMD(pi2cdev) (pi2cdev->IC_DATA_CMD = 0x100) //Read
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#define I2C_RX_FIFO_FULL(pi2cdev) ((pi2cdev->IC_STATUS & 0x10)==0x10)
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#define I2C_RX_FIFO_NOT_EMPTY(pi2cdev) ((pi2cdev->IC_STATUS & 0x08)==0x08)
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#define I2C_TX_FIFO_EMPTY(pi2cdev) ((pi2cdev->IC_STATUS & 0x04)==0x04)
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#define I2C_TX_FIFO_NOT_FULL(pi2cdev) ((pi2cdev->IC_STATUS & 0x02)==0x02)
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#define I2C_WAIT_RD_REQ(pi2cdev) !((pi2cdev->IC_RAW_INTR_STAT & 0x20)==0x20)
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#define I2C_RD_REQ(pi2cdev) ((pi2cdev->IC_RAW_INTR_STAT & 0x20)==0x20)
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#define I2C_NUMBER_DATA_RX_FIFO(pi2cdev) (pi2cdev->IC_RXFLR)
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#define I2C_NUMBER_DATA_TX_FIFO(pi2cdev) (pi2cdev->IC_TXFLR)
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#define I2C_CLR_RD_REQ(pi2cdev) (pi2cdev->IC_CLR_RD_REG)
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#define I2C_CLR_TX_ABRT(pi2cdev) (pi2cdev->IC_CLR_TX_ABRT)
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#define I2C_ENABLE(pi2cdev) (pi2cdev->IC_ENABLE=1)
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#define I2C_DISABLE(pi2cdev) (pi2cdev->IC_ENABLE=0)
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/*******************************************************************************
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@ Module : I2C Interrupt Mask Register
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@ Description : Interrupt MASK bit
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*******************************************************************************/
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#define I2C_MASK_RX_UNDER 0x0001
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#define I2C_MASK_RX_OVER 0x0002
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#define I2C_MASK_RX_FULL 0x0004
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#define I2C_MASK_TX_OVER 0x0008
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#define I2C_MASK_TX_EMPTY 0x0010
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#define I2C_MASK_RD_REQ 0x0020
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#define I2C_MASK_TX_ABRT 0x0040
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#define I2C_MASK_RX_DONE 0x0080
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#define I2C_MASK_ACTIVITY 0x0100
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#define I2C_MASK_STOP_DET 0x0200
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#define I2C_MASK_START_DET 0x0400
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#define I2C_MASK_GEN_CALL 0x0800
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/*******************************************************************************
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@ Module : I2C Status Register
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@ Description : Status Register BIT(Indicate transfer and FIFO Status)
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*******************************************************************************/
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#define I2C_STATUS_ACTIVITY 0x0001
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#define I2C_STATUS_TFNF 0x0002
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#define I2C_STATUS_TFE 0x0004
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#define I2C_STATUS_RFNE 0x0008
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#define I2C_STATUS_RFF 0x0010
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#define I2C_STATUS_MST_ACTIVITY 0x0020
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#define I2C_STATUS_SLV_ACTIVITY 0x0040
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#define I2C0_IRQ I2C0_IRQn
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#define I2C1_IRQ I2C1_IRQn
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/*******************************************************************************
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@ Module : IIC Speed Mode
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@ Description : None
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*******************************************************************************/
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typedef enum
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{
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SPEED_STANDARD = 1, //standard mode
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SPEED_FAST, //fast mode
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// SPEED_HIGH //high mode
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} I2C_SPEED_e;
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/*******************************************************************************
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@ Module : IIC Clock
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@ Description : None
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*******************************************************************************/
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typedef enum
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{
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I2C_CLOCK_100K = 0x00,
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I2C_CLOCK_400K,
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} I2C_CLOCK_e;
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typedef struct _I2C_Evt_t
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{
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uint16_t type;
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uint8_t* data;
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uint8_t len;
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} I2C_Evt_t;
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typedef enum
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{
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I2C_TX_STATE_UNINIT = 0,
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I2C_TX_STATE_IDLE,
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I2C_TX_STATE_TX,
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I2C_TX_STATE_ERR
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} I2C_STATE;
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/*******************************************************************************
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@ Module : Function declaration
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@ Description : None
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*******************************************************************************/
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int hal_i2c_send(void* pi2c, uint8_t* str,uint8_t len);
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void* hal_i2c_init(i2c_dev_t dev, I2C_CLOCK_e i2c_clock_rate);
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int hal_i2c_deinit(void* pi2c);
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int hal_i2c_pin_init(i2c_dev_t dev, gpio_pin_e pin_sda, gpio_pin_e pin_clk);
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int hal_i2c_addr_update(void* pi2c, uint8_t addr);
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int hal_i2c_wait_tx_completed(void* pi2c);
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int hal_i2c_tx_start(void* pi2c);
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int hal_i2c_read(void* pi2c,uint8_t slave_addr,uint8_t reg,uint8_t* data,uint8_t size);
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#ifdef __cplusplus
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}
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#endif
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#endif
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