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66 lines
1.4 KiB
C
66 lines
1.4 KiB
C
/*
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* RT-Thread Device Interface for uffs
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*/
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#include <rtthread.h>
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#include <rtdevice.h>
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#include <dfs_posix.h>
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#include <aic_common.h>
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#include <aic_core.h>
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#include <aic_drv.h>
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#include "crc32.h"
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#include "aic_time.h"
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static void show_speed(char *msg, u32 len, u32 us)
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{
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u32 tmp, speed;
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/* Split to serval step to avoid overflow */
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tmp = 1000 * len;
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tmp = tmp / us;
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tmp = 1000 * tmp;
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speed = tmp / 1024;
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printf("%s: %d byte, %d us -> %d KB/s\n", msg, len, us, speed);
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}
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static void file_crc32(int argc, char **argv)
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{
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int fd, size;
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uint8_t *buffer;
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uint32_t result;
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uint32_t start_us;
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if (argc != 2) {
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pr_err("Usage %s: %s <file name>.\n", __func__, __func__);
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return;
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}
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buffer = (uint8_t *)aicos_malloc(MEM_CMA, 0x40000);
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if (buffer == RT_NULL) {
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pr_err("buffer: no memory\n");
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return;
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}
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/* open the ‘/text.txt’ file in read-only mode */
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fd = open(argv[1], O_RDONLY);
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if (fd >= 0) {
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start_us = aic_get_time_us();
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size = read(fd, buffer, 0x80000);
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show_speed("read speed", size, aic_get_time_us() - start_us);
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result = crc32(0, buffer, size);
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pr_info("result : 0x%x size : %d\n", result, size);
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close(fd);
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pr_info("Read from file : %s \n", argv[1]);
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}
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if (buffer)
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aicos_free(MEM_CMA, buffer);
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return;
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}
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MSH_CMD_EXPORT(file_crc32, Calculate the file crc32);
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