rt-thread/bsp/allwinner/libraries/sunxi-hal/hal/test/twi/test_twi.c

/*
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* All Allwinner Technology Co.,Ltd. trademarks are used with permission.
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#include <stdio.h>
#include <stdlib.h>
#include <stdint.h>
#include <string.h>
#include <unistd.h>

#include <hal_log.h>
#include <hal_cmd.h>
#include <sunxi_hal_twi.h>

#define TEST_READ 0
#define TEST_WRITE 1

static int cmd_test_twi(int argc, const char **argv)
{
    twi_msg_t msg;
    twi_port_t port;
    uint16_t addr;
    char reg_addr, reg_val = 0, rw = TEST_READ;
    int c;

    if (argc < 5)
    {
        hal_log_info("Usage:");
        hal_log_info("\ttwi [port] [slave_addr] [reg] -r");
        hal_log_info("\t                              -w [val]");
        return -1;
    }

    hal_log_info("Run twi test");

    port = strtol(argv[1], NULL, 0);
    addr = strtol(argv[2], NULL, 0);
    reg_addr = strtol(argv[3], NULL, 0);

    while ((c = getopt(argc, (char *const *)argv, "r:w")) != -1)
    {
        switch (c)
        {
            case 'r':
                hal_log_info("twi read test");
                rw = TEST_READ;
                break;
            case 'w':
                hal_log_info("twi write test");
                rw = TEST_WRITE;
                reg_val = strtol(argv[5], NULL, 0);
                break;
            default:
                hal_log_err("invalid param!");
        }
    }

    hal_twi_init(port);
    hal_twi_control(port, I2C_SLAVE, &addr);

    if (rw == TEST_READ)
    {
        hal_twi_read(port, reg_addr, &reg_val, 1);
        hal_log_info("reg_val: 0x%x", reg_val);
    }
    else if (rw == TEST_WRITE)
    {
        /*
         * hal_twi_write bug workaround
         */
        uint8_t buf[2];

        buf[0] = reg_addr;
        buf[1] = reg_val;
        msg.flags = 0;
        msg.addr =  addr;
        msg.len = 2;
        msg.buf = buf;

        hal_twi_control(port, I2C_RDWR, &msg);
    }

    hal_log_info("Twi test finish");

    hal_twi_uninit(port);

    return 0;
}

FINSH_FUNCTION_EXPORT_CMD(cmd_test_twi, hal_twi, twi hal APIs tests)