vendor/827x_driver_test/app_i2c_master.c

/******************************************************************************
 * @file     app_i2c_master.c
 *
 * @brief    for TLSR chips
 *
 * @author   public@telink-semi.com;
 * @date     Sep. 30, 2010
 *
 * @attention
 *
 *  Copyright (C) 2019-2020 Telink Semiconductor (Shanghai) Co., Ltd.
 *
 *  Licensed under the Apache License, Version 2.0 (the "License");
 *  you may not use this file except in compliance with the License.
 *  You may obtain a copy of the License at
 *
 *      http://www.apache.org/licenses/LICENSE-2.0
 *
 *  Unless required by applicable law or agreed to in writing, software
 *  distributed under the License is distributed on an "AS IS" BASIS,
 *  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 *  See the License for the specific language governing permissions and
 *  limitations under the License.
 *
 *****************************************************************************/
#include "tl_common.h"
#include "drivers.h"



#if(DRIVER_TEST_MODE == TEST_IIC && I2C_DEMO_SELECT == I2C_DEMO_MASTER)





/**************************************************************************************
   8258 Demo Code Config
   1. select i2c demo:  master or slave( config it in app_config.h )
   2. if i2c slave demo,  select slave working mode: mapping mode or dma mode
   3. if i2c master demo, select the peer device i2c slave address mode:
                826x/8255 mapping mode/dma mode or other not telink's device
            here selecting peer slave device mode is for master sending address byte length

 *************************************************************************************/


#if(I2C_DEMO_SELECT == I2C_DEMO_MASTER)
	//826x: 8261/8266/8267/8269
	//825x: 8255/8258
    //82xx: 8261/8266/8267/8269 and 8255/8258

	#define     SLAVE_TELINK_825x_DMA_MODE      1 //slave  825x dma mode, master send 3 byte sram address(0x40000~0x4ffff)
	#define     SLAVE_TELINK_82xx_MAPPING_MODE  2 //slave  826x/825x  mapping mode, master no need send address(address length is 0)
	#define     SLAVE_TELINK_826x_DMA_MODE      3 //slave  826x dma mode, master send 2 byte sram address(0x8000~0xffff)
	#define     SLAVE_OTHER_I2C_DEVICE			4 //slave  not telink mcu, address length may be 1 or 2 or others.


	#define		PEER_SLAVE_DEVICE				SLAVE_TELINK_825x_DMA_MODE
#endif

/**************************************************************************************
 *
 *************************************************************************************/
/*************** i2c master data buffer *****************/
//write buff
volatile unsigned char i2c_master_tx_buff[DBG_DATA_LEN] = {0x00,0x11,0x22,0x33,0x44,0x55,0x66,0x77,0x88,0x99,0xaa,0xbb,0xcc,0xdd,0xee,0xff};
//read buff
volatile unsigned char i2c_master_rx_buff[DBG_DATA_LEN] = {0};

unsigned char master_rx_buff_debug[DBG_DATA_LEN *DBG_DATA_NUM];   //store i2c master reading data here to debug
int master_rx_index = 0;










void i2c_master_test_init(void)
{

	//I2C pin set
	i2c_gpio_set(I2C_GPIO_SDA_C0,I2C_GPIO_SCL_C1);  	//SDA/CK : C0/C1



	//slave device id 0x5C(write) 0x5D(read)
	//i2c clock 200K, only master need set i2c clock
	i2c_master_init(0x5C, (unsigned char)(CLOCK_SYS_CLOCK_HZ/(4*200000)) );

}


void i2c_master_mainloop(void)
{

	WaitMs(1000);   //1 S


	#if (PEER_SLAVE_DEVICE == SLAVE_TELINK_825x_DMA_MODE)
		i2c_master_tx_buff[0] += 1;
		//825x slave dma mode, sram address(0x40000~0x4FFFF) length should be 3 byte
		i2c_write_series(SLAVE_DMA_MODE_ADDR_WRITE, 3, (unsigned char *)i2c_master_tx_buff, DBG_DATA_LEN);
		i2c_read_series(SLAVE_DMA_MODE_ADDR_READ,  3, (unsigned char *)i2c_master_rx_buff, DBG_DATA_LEN);

		/*********** copy the data read by i2c master from slave for debug  ****************/
		memcpy( (unsigned char *)(master_rx_buff_debug + master_rx_index*DBG_DATA_LEN), (unsigned char *)i2c_master_rx_buff, DBG_DATA_LEN);
		master_rx_index ++;
		if(master_rx_index>=DBG_DATA_NUM){
			master_rx_index = 0;
		}

	#elif (PEER_SLAVE_DEVICE == SLAVE_TELINK_82xx_MAPPING_MODE)
		i2c_master_tx_buff[0] += 1;
		//slave mapping mode, no need send address information, so address length should be 0
		i2c_write_series(0, 0, (unsigned char*)i2c_master_tx_buff, DBG_DATA_LEN);
		i2c_read_series(0, 0, (unsigned char*)i2c_master_rx_buff, DBG_DATA_LEN);

		/*********** copy the data read by i2c master from slave for debug  ****************/
		memcpy((unsigned char*)(master_rx_buff_debug + master_rx_index*DBG_DATA_LEN), (unsigned char*)i2c_master_rx_buff, DBG_DATA_LEN);
		master_rx_index ++;
		if(master_rx_index>=DBG_DATA_NUM){
			master_rx_index = 0;
		}

	#elif (PEER_SLAVE_DEVICE == SLAVE_TELINK_826x_DMA_MODE)

		need  add code here

	#elif (PEER_SLAVE_DEVICE == SLAVE_OTHER_I2C_DEVICE)

		need  add code here

	#endif

}





_attribute_ram_code_ void app_i2c_test_irq_proc(void)
{

}



#endif  //end of I2C_DEMO_SELECT == I2C_DEMO_MASTER