forked from xuos/xiuos
31 lines
832 B
C
31 lines
832 B
C
#include <stdio.h>
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#include <string.h>
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#include <transform.h>
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#define MAX_READ_LENGTH 1000
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// sd card here is loaded as "/"
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void TestSD(void)
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{
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//open the file in sdcard
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int fd = open(SD_FPATH,O_RDWR|O_CREAT);
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char filewords[MAX_READ_LENGTH];
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memset(filewords,0,MAX_READ_LENGTH);
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//read and write then close file
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read(fd,filewords,MAX_READ_LENGTH);
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printf("read data is \n%s\n",filewords);
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const char *input_words = "these words are going to write in sdcard\n";
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write(fd,input_words,strlen(input_words));
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close(fd);
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//re-open the file and re-read the file
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fd = open(SD_FPATH,O_RDWR);
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read(fd,filewords,MAX_READ_LENGTH);
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printf("read data is \n%s\n",filewords);
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close(fd);
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return;
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}
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PRIV_SHELL_CMD_FUNCTION(TestSD, a sdcard test sample, PRIV_SHELL_CMD_MAIN_ATTR); |