Run a file system on the Dragonfly's SPI Flash.
Dependencies: SpiFlash25 flash-fs
main.cpp@0:54ec26dc283f, 2020-06-26 (annotated)
- Committer:
- Leon Lindenfelser
- Date:
- Fri Jun 26 16:49:06 2020 -0500
- Revision:
- 0:54ec26dc283f
Initial commit for mbed 5 version of this program
Who changed what in which revision?
User | Revision | Line number | New contents of line |
---|---|---|---|
Leon Lindenfelser |
0:54ec26dc283f | 1 | /** Dragonfly Filesystem Example |
Leon Lindenfelser |
0:54ec26dc283f | 2 | * Opens file in filesystem, prints contents of the file, and writes to the file. |
Leon Lindenfelser |
0:54ec26dc283f | 3 | * |
Leon Lindenfelser |
0:54ec26dc283f | 4 | * NOTE: This example changes the baud rate of the debug port to 115200 baud! |
Leon Lindenfelser |
0:54ec26dc283f | 5 | */ |
Leon Lindenfelser |
0:54ec26dc283f | 6 | #include "mbed.h" |
Leon Lindenfelser |
0:54ec26dc283f | 7 | #include "SpiFlash25.h" |
Leon Lindenfelser |
0:54ec26dc283f | 8 | #include "spiffs.h" |
Leon Lindenfelser |
0:54ec26dc283f | 9 | #include <string> |
Leon Lindenfelser |
0:54ec26dc283f | 10 | |
Leon Lindenfelser |
0:54ec26dc283f | 11 | // This line controls the regulator's battery charger. |
Leon Lindenfelser |
0:54ec26dc283f | 12 | // BC_NCE = 0 enables the battery charger |
Leon Lindenfelser |
0:54ec26dc283f | 13 | // BC_NCE = 1 disables the battery charger |
Leon Lindenfelser |
0:54ec26dc283f | 14 | DigitalOut bc_nce(PB_2); |
Leon Lindenfelser |
0:54ec26dc283f | 15 | |
Leon Lindenfelser |
0:54ec26dc283f | 16 | // this value represents the number of files you can have open at the same time |
Leon Lindenfelser |
0:54ec26dc283f | 17 | // adjust it according to your requirements |
Leon Lindenfelser |
0:54ec26dc283f | 18 | #define MAX_CONCURRENT_FDS 4 |
Leon Lindenfelser |
0:54ec26dc283f | 19 | |
Leon Lindenfelser |
0:54ec26dc283f | 20 | #define PAGE_SIZE 256 |
Leon Lindenfelser |
0:54ec26dc283f | 21 | #define SECTOR_SIZE 64*1024 |
Leon Lindenfelser |
0:54ec26dc283f | 22 | #define MEM_SIZE 2*1024*1024 |
Leon Lindenfelser |
0:54ec26dc283f | 23 | |
Leon Lindenfelser |
0:54ec26dc283f | 24 | static u8_t spiffs_work_buf[PAGE_SIZE * 2]; |
Leon Lindenfelser |
0:54ec26dc283f | 25 | static u8_t spiffs_fds[32 * MAX_CONCURRENT_FDS]; |
Leon Lindenfelser |
0:54ec26dc283f | 26 | static u8_t spiffs_cache_buf[(PAGE_SIZE + 32) * 4]; |
Leon Lindenfelser |
0:54ec26dc283f | 27 | |
Leon Lindenfelser |
0:54ec26dc283f | 28 | static SpiFlash25 flash(SPI_MOSI, SPI_MISO, SPI_SCK, SPI_CS1); |
Leon Lindenfelser |
0:54ec26dc283f | 29 | static spiffs fs; |
Leon Lindenfelser |
0:54ec26dc283f | 30 | static spiffs_config cfg; |
Leon Lindenfelser |
0:54ec26dc283f | 31 | |
Leon Lindenfelser |
0:54ec26dc283f | 32 | // glue code between SPI driver and filesystem driver |
Leon Lindenfelser |
0:54ec26dc283f | 33 | int spi_read(unsigned int addr, unsigned int size, unsigned char* data) { |
Leon Lindenfelser |
0:54ec26dc283f | 34 | if (flash.read(addr, size, (char*)data)) |
Leon Lindenfelser |
0:54ec26dc283f | 35 | return SPIFFS_OK; |
Leon Lindenfelser |
0:54ec26dc283f | 36 | return -1; |
Leon Lindenfelser |
0:54ec26dc283f | 37 | } |
Leon Lindenfelser |
0:54ec26dc283f | 38 | int spi_write(unsigned int addr, unsigned int size, unsigned char* data) { |
Leon Lindenfelser |
0:54ec26dc283f | 39 | if (flash.write(addr, size, (const char*)data)) |
Leon Lindenfelser |
0:54ec26dc283f | 40 | return SPIFFS_OK; |
Leon Lindenfelser |
0:54ec26dc283f | 41 | return -1; |
Leon Lindenfelser |
0:54ec26dc283f | 42 | } |
Leon Lindenfelser |
0:54ec26dc283f | 43 | int spi_erase(unsigned int addr, unsigned int size) { |
Leon Lindenfelser |
0:54ec26dc283f | 44 | flash.clear_sector(addr); |
Leon Lindenfelser |
0:54ec26dc283f | 45 | return SPIFFS_OK; |
Leon Lindenfelser |
0:54ec26dc283f | 46 | } |
Leon Lindenfelser |
0:54ec26dc283f | 47 | |
Leon Lindenfelser |
0:54ec26dc283f | 48 | int main(void) { |
Leon Lindenfelser |
0:54ec26dc283f | 49 | // Disable the battery charger unless a battery is attached. |
Leon Lindenfelser |
0:54ec26dc283f | 50 | bc_nce = 1; |
Leon Lindenfelser |
0:54ec26dc283f | 51 | |
Leon Lindenfelser |
0:54ec26dc283f | 52 | int ret; |
Leon Lindenfelser |
0:54ec26dc283f | 53 | int handle; |
Leon Lindenfelser |
0:54ec26dc283f | 54 | char data[256]; |
Leon Lindenfelser |
0:54ec26dc283f | 55 | char msg[] = "Hello World! The sneaky cat crept around the sleeping dog.\r\n"; |
Leon Lindenfelser |
0:54ec26dc283f | 56 | char file[] = "test.txt"; |
Leon Lindenfelser |
0:54ec26dc283f | 57 | string sdata; |
Leon Lindenfelser |
0:54ec26dc283f | 58 | |
Leon Lindenfelser |
0:54ec26dc283f | 59 | // configure the filesystem |
Leon Lindenfelser |
0:54ec26dc283f | 60 | cfg.phys_size = MEM_SIZE; |
Leon Lindenfelser |
0:54ec26dc283f | 61 | cfg.phys_addr = 0; |
Leon Lindenfelser |
0:54ec26dc283f | 62 | cfg.phys_erase_block = SECTOR_SIZE; |
Leon Lindenfelser |
0:54ec26dc283f | 63 | cfg.log_block_size = SECTOR_SIZE; |
Leon Lindenfelser |
0:54ec26dc283f | 64 | cfg.log_page_size = PAGE_SIZE; |
Leon Lindenfelser |
0:54ec26dc283f | 65 | |
Leon Lindenfelser |
0:54ec26dc283f | 66 | cfg.hal_read_f = &spi_read; |
Leon Lindenfelser |
0:54ec26dc283f | 67 | cfg.hal_write_f = &spi_write; |
Leon Lindenfelser |
0:54ec26dc283f | 68 | cfg.hal_erase_f = &spi_erase; |
Leon Lindenfelser |
0:54ec26dc283f | 69 | |
Leon Lindenfelser |
0:54ec26dc283f | 70 | Serial pc(USBTX, USBRX); |
Leon Lindenfelser |
0:54ec26dc283f | 71 | pc.baud(115200); |
Leon Lindenfelser |
0:54ec26dc283f | 72 | |
Leon Lindenfelser |
0:54ec26dc283f | 73 | printf("Dragonfly spi flash example started\r\n"); |
Leon Lindenfelser |
0:54ec26dc283f | 74 | |
Leon Lindenfelser |
0:54ec26dc283f | 75 | // erase entire flash |
Leon Lindenfelser |
0:54ec26dc283f | 76 | // THIS WILL ERASE THE ENTIRE FLASH! EVERYTHING ON IT WILL BE LOST AND CANNOT BE RECOVERED! |
Leon Lindenfelser |
0:54ec26dc283f | 77 | //flash.clear_mem(); |
Leon Lindenfelser |
0:54ec26dc283f | 78 | |
Leon Lindenfelser |
0:54ec26dc283f | 79 | // mount the filesystem |
Leon Lindenfelser |
0:54ec26dc283f | 80 | ret = SPIFFS_mount(&fs, &cfg, spiffs_work_buf, spiffs_fds, sizeof(spiffs_fds), spiffs_cache_buf, sizeof(spiffs_cache_buf), NULL); |
Leon Lindenfelser |
0:54ec26dc283f | 81 | if (ret) { |
Leon Lindenfelser |
0:54ec26dc283f | 82 | printf("SPIFFS_mount failed %d - can't continue\r\n", ret); |
Leon Lindenfelser |
0:54ec26dc283f | 83 | return 1; |
Leon Lindenfelser |
0:54ec26dc283f | 84 | } |
Leon Lindenfelser |
0:54ec26dc283f | 85 | |
Leon Lindenfelser |
0:54ec26dc283f | 86 | // write to the file |
Leon Lindenfelser |
0:54ec26dc283f | 87 | handle = SPIFFS_open(&fs, file, SPIFFS_CREAT | SPIFFS_RDWR | SPIFFS_APPEND, 0); |
Leon Lindenfelser |
0:54ec26dc283f | 88 | if (handle < 0) |
Leon Lindenfelser |
0:54ec26dc283f | 89 | printf("SPIFFS_open failed %d\r\n", SPIFFS_errno(&fs)); |
Leon Lindenfelser |
0:54ec26dc283f | 90 | |
Leon Lindenfelser |
0:54ec26dc283f | 91 | if (handle) { |
Leon Lindenfelser |
0:54ec26dc283f | 92 | ret = SPIFFS_write(&fs, handle, msg, sizeof(msg)); |
Leon Lindenfelser |
0:54ec26dc283f | 93 | if (ret < 0) |
Leon Lindenfelser |
0:54ec26dc283f | 94 | printf("SPIFFS_write failed %d\r\n", SPIFFS_errno(&fs)); |
Leon Lindenfelser |
0:54ec26dc283f | 95 | else |
Leon Lindenfelser |
0:54ec26dc283f | 96 | printf("Wrote %d bytes\r\n", ret); |
Leon Lindenfelser |
0:54ec26dc283f | 97 | SPIFFS_close(&fs, handle); |
Leon Lindenfelser |
0:54ec26dc283f | 98 | } |
Leon Lindenfelser |
0:54ec26dc283f | 99 | |
Leon Lindenfelser |
0:54ec26dc283f | 100 | // read the current file contents |
Leon Lindenfelser |
0:54ec26dc283f | 101 | spiffs_stat stat; |
Leon Lindenfelser |
0:54ec26dc283f | 102 | memset(&stat, 0, sizeof(stat)); |
Leon Lindenfelser |
0:54ec26dc283f | 103 | ret = SPIFFS_stat(&fs, file, &stat); |
Leon Lindenfelser |
0:54ec26dc283f | 104 | if (ret) |
Leon Lindenfelser |
0:54ec26dc283f | 105 | printf("SPIFFS_stat failed %d\r\n", SPIFFS_errno(&fs)); |
Leon Lindenfelser |
0:54ec26dc283f | 106 | else |
Leon Lindenfelser |
0:54ec26dc283f | 107 | printf("File size: %d bytes\r\n", stat.size); |
Leon Lindenfelser |
0:54ec26dc283f | 108 | |
Leon Lindenfelser |
0:54ec26dc283f | 109 | handle = SPIFFS_open(&fs, file, SPIFFS_RDWR, 0); |
Leon Lindenfelser |
0:54ec26dc283f | 110 | if (handle < 0) |
Leon Lindenfelser |
0:54ec26dc283f | 111 | printf("SPIFFS_open failed %d\r\n", SPIFFS_errno(&fs)); |
Leon Lindenfelser |
0:54ec26dc283f | 112 | |
Leon Lindenfelser |
0:54ec26dc283f | 113 | if (handle) { |
Leon Lindenfelser |
0:54ec26dc283f | 114 | while (sdata.size() < stat.size) { |
Leon Lindenfelser |
0:54ec26dc283f | 115 | ret = SPIFFS_read(&fs, handle, data, stat.size - sdata.size() < sizeof(data) ? stat.size - sdata.size() : sizeof(data)); |
Leon Lindenfelser |
0:54ec26dc283f | 116 | if (ret < 0) { |
Leon Lindenfelser |
0:54ec26dc283f | 117 | printf("SPIFFS_read failed %d\r\n", SPIFFS_errno(&fs)); |
Leon Lindenfelser |
0:54ec26dc283f | 118 | continue; |
Leon Lindenfelser |
0:54ec26dc283f | 119 | } |
Leon Lindenfelser |
0:54ec26dc283f | 120 | printf("Read %d bytes\r\n", ret); |
Leon Lindenfelser |
0:54ec26dc283f | 121 | sdata.append(data, ret); |
Leon Lindenfelser |
0:54ec26dc283f | 122 | } |
Leon Lindenfelser |
0:54ec26dc283f | 123 | |
Leon Lindenfelser |
0:54ec26dc283f | 124 | printf("Data [\r\n"); |
Leon Lindenfelser |
0:54ec26dc283f | 125 | for (int i = 0; i < sdata.size(); i++) |
Leon Lindenfelser |
0:54ec26dc283f | 126 | printf("%c", sdata[i]); |
Leon Lindenfelser |
0:54ec26dc283f | 127 | printf("\r\n]\r\n"); |
Leon Lindenfelser |
0:54ec26dc283f | 128 | |
Leon Lindenfelser |
0:54ec26dc283f | 129 | SPIFFS_close(&fs, handle); |
Leon Lindenfelser |
0:54ec26dc283f | 130 | } |
Leon Lindenfelser |
0:54ec26dc283f | 131 | |
Leon Lindenfelser |
0:54ec26dc283f | 132 | printf("Dragonfly spi flash example finished\r\n\r\n"); |
Leon Lindenfelser |
0:54ec26dc283f | 133 | |
Leon Lindenfelser |
0:54ec26dc283f | 134 | return 0; |
Leon Lindenfelser |
0:54ec26dc283f | 135 | } |