133 lines
3.2 KiB
C
133 lines
3.2 KiB
C
/*
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* Example of using FatFs with RTC clock
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*
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* Part of esp-open-rtos
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* Copyright (C) 2016 Ruslan V. Uss <unclerus@gmail.com>
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* BSD Licensed as described in the file LICENSE
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*/
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#include <esp/uart.h>
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#include <espressif/esp_common.h>
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#include <stdio.h>
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#include <fatfs/ff.h>
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#include <FreeRTOS.h>
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#include <task.h>
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#include <i2c/i2c.h>
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#include <ds1307/ds1307.h>
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// SD card
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#define CS_GPIO_PIN 2
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// ds1307
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#define SCL_PIN 5
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#define SDA_PIN 4
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#define TEST_FILENAME "/test_rtc_file.txt"
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#define TEST_CONTENTS "Hello! It's a test file and it can be deleted!"
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#define DELAY_MS 3000
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// This function called by FatFs
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uint32_t get_fattime()
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{
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struct tm time;
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ds1307_get_time(&time);
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return ((uint32_t)(time.tm_year - 1980) << 25)
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| ((uint32_t)time.tm_mon << 21)
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| ((uint32_t)time.tm_mday << 16)
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| ((uint32_t)time.tm_hour << 11)
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| ((uint32_t)time.tm_min << 5)
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| ((uint32_t)time.tm_sec >> 1);
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}
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static const char contents[] = TEST_CONTENTS;
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static FATFS fs;
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static void dump_fileinfo()
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{
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FILINFO info;
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printf("File: %s\n", TEST_FILENAME);
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if (f_stat(TEST_FILENAME, &info) != FR_OK)
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{
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printf("Cannot get file status\n");
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return;
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}
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printf("File size: %u bytes\n", (uint32_t)info.fsize);
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printf(
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"Modified: %04d-%02d-%02d %02d:%02d:%02d\n",
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(info.fdate >> 9) + 1980, // year
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(info.fdate >> 5) & 0x0f, // month
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info.fdate & 0x1f, // day
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info.ftime >> 11, // hours
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(info.ftime >> 5) & 0x3F, // minutes
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(info.ftime & 0x1f) << 1 // seconds
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);
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}
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void rewrite_file_task(void *p)
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{
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const char *volume = f_gpio_to_volume(CS_GPIO_PIN);
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while (true)
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{
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do
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{
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if (f_mount(&fs, volume, 1) != FR_OK)
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{
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printf("Cannot mount volume %s\n", volume);
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break;
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}
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if (f_chdrive(volume) != FR_OK)
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{
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printf("Cannot set default drive %s\n", volume);
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break;
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}
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printf("\nTest file\n----------------------------\n");
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dump_fileinfo();
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printf("\nRe-creating test file\n----------------------------\n");
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FIL f; //< It's big and it's on the stack! We need larger stack size
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if (f_open(&f, TEST_FILENAME, FA_WRITE | FA_CREATE_ALWAYS) != FR_OK)
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{
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printf("Cannot create file %s\n", TEST_FILENAME);
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break;
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}
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size_t bw;
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if (f_write(&f, contents, sizeof(contents) - 1, &bw))
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{
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printf("Cannot write to file\n");
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break;
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}
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printf("Bytes written: %d\n", bw);
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if (f_close(&f) != FR_OK)
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{
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printf("Cannot close file\n");
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break;
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}
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dump_fileinfo();
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f_mount(NULL, volume, 0);
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}
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while (false);
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vTaskDelay(DELAY_MS / portTICK_PERIOD_MS);
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}
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}
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void user_init(void)
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{
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uart_set_baud(0, 115200);
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printf("SDK version:%s\n\n", sdk_system_get_sdk_version());
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i2c_init (SCL_PIN, SDA_PIN);
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xTaskCreate(rewrite_file_task, "task1", 512, NULL, 2, NULL);
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}
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