huxi
97 lines
3.1 KiB
C
97 lines
3.1 KiB
C
#ifdef SUPPORT_MS_EXTENSIONS
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#pragma bss_seg(".iic_master_demo.data.bss")
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#pragma data_seg(".iic_master_demo.data")
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#pragma const_seg(".iic_master_demo.text.const")
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#pragma code_seg(".iic_master_demo.text")
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#endif
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#include "clock.h"
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#include "asm/wdt.h"
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#define LOG_TAG "[iic_m_demo]"
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#define LOG_ERROR_ENABLE
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#define LOG_DEBUG_ENABLE
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#define LOG_INFO_ENABLE
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#define LOG_CLI_ENABLE
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#include "debug.h"
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#if 1 //0:软件iic, 1:硬件iic
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#define _IIC_USE_HW
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#endif
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#include "iic_api.h"
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/******************************iic master test*****************************/
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#if 1
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#define IIC_SCL_IO IO_PORTA_01
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#define IIC_SDA_IO IO_PORTA_02
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void iic_master_polling_test()
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{
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struct iic_master_config iic_config_test = {
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.role = IIC_MASTER,
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.scl_io = IIC_SCL_IO,
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.sda_io = IIC_SDA_IO,
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.io_mode = PORT_INPUT_PULLUP_10K,//上拉或浮空
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.hdrive = PORT_DRIVE_STRENGT_2p4mA, //enum GPIO_HDRIVE 0:2.4MA, 1:8MA, 2:26.4MA, 3:40MA
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.master_frequency = 100000, //软件iic频率不准(hz)
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.io_filter = 1, //软件无效
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.ie_en = 1,//1:注册中断
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.irq_priority = 3,//优先级
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};
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//eeprom
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#ifdef _IIC_USE_HW
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log_info("**********************hw iic test*************************\n");
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u8 eeprom_reg_addr = 56;
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hw_iic_dev iic_dev = HW_IIC_0;
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#else
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log_info("**********************soft iic test*************************\n");
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u8 eeprom_reg_addr = 64;
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soft_iic_dev iic_dev = 0;
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#endif
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enum iic_state_enum iic_init_state = iic_init(iic_dev, &iic_config_test);
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if (iic_init_state == IIC_OK) {
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log_info("iic(%d) master init ok", iic_dev);
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} else {
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log_error("iic(%d) master init fail", iic_dev);
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return;
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}
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u8 eeprom_wbuf[32], eeprom_rbuf[32];
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u8 eeprom_dev_addr = 0xa0;
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u8 eeprom_retry_cnt = 10;
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int eeprom_ret_len = 0;
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for (u8 i = 0; i < sizeof(eeprom_rbuf); i++) {
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eeprom_wbuf[i] = i % 26 + 'a';
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eeprom_rbuf[i] = 0;
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}
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eeprom_ret_len = i2c_master_read_nbytes_from_device_reg(iic_dev, eeprom_dev_addr, &eeprom_reg_addr, 1, eeprom_rbuf, 31);
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log_info("%s,len:%d", eeprom_rbuf, eeprom_ret_len);
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memset(eeprom_rbuf, 0, 32);
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mdelay(20);
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//cppcheck-suppress redundantAssignment
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eeprom_ret_len = 0;
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puts(">>>> write in\n");
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while ((eeprom_ret_len != 8) && (--eeprom_retry_cnt)) {
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eeprom_ret_len = i2c_master_write_nbytes_to_device_reg(iic_dev, eeprom_dev_addr, &eeprom_reg_addr, 1, eeprom_wbuf, 8);
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}
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puts("<<<< write out\n");
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eeprom_retry_cnt = 10;
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mdelay(20);
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eeprom_ret_len = 0;
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puts(">>>> read in\n");
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while ((eeprom_ret_len != 31) && (--eeprom_retry_cnt)) {
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eeprom_ret_len = i2c_master_read_nbytes_from_device_reg(iic_dev, eeprom_dev_addr, &eeprom_reg_addr, 1, eeprom_rbuf, 31);
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}
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puts("<<<< read out\n");
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iic_init_state = iic_deinit(iic_dev);
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if (iic_init_state == IIC_OK) {
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log_info("iic(%d) master uninit ok", iic_dev);
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} else {
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log_error("iic(%d) master uninit fail", iic_dev);
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}
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log_info_hexdump(eeprom_rbuf, 32);
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log_info("%s", eeprom_rbuf);
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}
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#endif
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