Latest mbed source. 2015-10-19
main.cpp@0:a802928f26b6, 2014-12-29 (annotated)
- Committer:
- mfiore
- Date:
- Mon Dec 29 15:52:43 2014 +0000
- Revision:
- 0:a802928f26b6
initial commit
Who changed what in which revision?
User | Revision | Line number | New contents of line |
---|---|---|---|
mfiore | 0:a802928f26b6 | 1 | #include "mbed.h" |
mfiore | 0:a802928f26b6 | 2 | #include "SpiFlash25.h" |
mfiore | 0:a802928f26b6 | 3 | #include "spiffs.h" |
mfiore | 0:a802928f26b6 | 4 | #include <string> |
mfiore | 0:a802928f26b6 | 5 | |
mfiore | 0:a802928f26b6 | 6 | // this value represents the number of files you can have open at the same time |
mfiore | 0:a802928f26b6 | 7 | // adjust it according to your requirements |
mfiore | 0:a802928f26b6 | 8 | #define MAX_CONCURRENT_FDS 4 |
mfiore | 0:a802928f26b6 | 9 | |
mfiore | 0:a802928f26b6 | 10 | #define PAGE_SIZE 256 |
mfiore | 0:a802928f26b6 | 11 | #define SECTOR_SIZE 64*1024 |
mfiore | 0:a802928f26b6 | 12 | #define MEM_SIZE 2*1024*1024 |
mfiore | 0:a802928f26b6 | 13 | |
mfiore | 0:a802928f26b6 | 14 | static u8_t spiffs_work_buf[PAGE_SIZE * 2]; |
mfiore | 0:a802928f26b6 | 15 | static u8_t spiffs_fds[32 * MAX_CONCURRENT_FDS]; |
mfiore | 0:a802928f26b6 | 16 | static u8_t spiffs_cache_buf[(PAGE_SIZE + 32) * 4]; |
mfiore | 0:a802928f26b6 | 17 | |
mfiore | 0:a802928f26b6 | 18 | static SpiFlash25 flash(SPI_MOSI, SPI_MISO, SPI_SCK, SPI_CS1); |
mfiore | 0:a802928f26b6 | 19 | static spiffs fs; |
mfiore | 0:a802928f26b6 | 20 | static spiffs_config cfg; |
mfiore | 0:a802928f26b6 | 21 | |
mfiore | 0:a802928f26b6 | 22 | // glue code between SPI driver and filesystem |
mfiore | 0:a802928f26b6 | 23 | int spi_read(unsigned int addr, unsigned int size, unsigned char* data) { |
mfiore | 0:a802928f26b6 | 24 | if (flash.read(addr, size, (char*)data)) |
mfiore | 0:a802928f26b6 | 25 | return SPIFFS_OK; |
mfiore | 0:a802928f26b6 | 26 | return -1; |
mfiore | 0:a802928f26b6 | 27 | } |
mfiore | 0:a802928f26b6 | 28 | int spi_write(unsigned int addr, unsigned int size, unsigned char* data) { |
mfiore | 0:a802928f26b6 | 29 | if (flash.write(addr, size, (const char*)data)) |
mfiore | 0:a802928f26b6 | 30 | return SPIFFS_OK; |
mfiore | 0:a802928f26b6 | 31 | return -1; |
mfiore | 0:a802928f26b6 | 32 | } |
mfiore | 0:a802928f26b6 | 33 | int spi_erase(unsigned int addr, unsigned int size) { |
mfiore | 0:a802928f26b6 | 34 | flash.clear_sector(addr); |
mfiore | 0:a802928f26b6 | 35 | return SPIFFS_OK; |
mfiore | 0:a802928f26b6 | 36 | } |
mfiore | 0:a802928f26b6 | 37 | |
mfiore | 0:a802928f26b6 | 38 | int main(void) { |
mfiore | 0:a802928f26b6 | 39 | int ret; |
mfiore | 0:a802928f26b6 | 40 | int handle; |
mfiore | 0:a802928f26b6 | 41 | char data[256]; |
mfiore | 0:a802928f26b6 | 42 | char msg[] = "Hello World! The sneaky cat crept around the sleeping dog.\r\n"; |
mfiore | 0:a802928f26b6 | 43 | char file[] = "test.txt"; |
mfiore | 0:a802928f26b6 | 44 | string sdata; |
mfiore | 0:a802928f26b6 | 45 | |
mfiore | 0:a802928f26b6 | 46 | // configure the filesystem |
mfiore | 0:a802928f26b6 | 47 | cfg.phys_size = MEM_SIZE; |
mfiore | 0:a802928f26b6 | 48 | cfg.phys_addr = 0; |
mfiore | 0:a802928f26b6 | 49 | cfg.phys_erase_block = SECTOR_SIZE; |
mfiore | 0:a802928f26b6 | 50 | cfg.log_block_size = SECTOR_SIZE; |
mfiore | 0:a802928f26b6 | 51 | cfg.log_page_size = PAGE_SIZE; |
mfiore | 0:a802928f26b6 | 52 | |
mfiore | 0:a802928f26b6 | 53 | cfg.hal_read_f = &spi_read; |
mfiore | 0:a802928f26b6 | 54 | cfg.hal_write_f = &spi_write; |
mfiore | 0:a802928f26b6 | 55 | cfg.hal_erase_f = &spi_erase; |
mfiore | 0:a802928f26b6 | 56 | |
mfiore | 0:a802928f26b6 | 57 | Serial pc(USBTX, USBRX); |
mfiore | 0:a802928f26b6 | 58 | pc.baud(115200); |
mfiore | 0:a802928f26b6 | 59 | |
mfiore | 0:a802928f26b6 | 60 | printf("dragonfly spi flash example started\r\n"); |
mfiore | 0:a802928f26b6 | 61 | |
mfiore | 0:a802928f26b6 | 62 | // erase entire flash |
mfiore | 0:a802928f26b6 | 63 | // THIS WILL ERASE THE ENTIRE FLASH! EVERYTHING ON IT WILL BE LOST AND CANNOT BE RECOVERED! |
mfiore | 0:a802928f26b6 | 64 | //flash.clear_mem(); |
mfiore | 0:a802928f26b6 | 65 | |
mfiore | 0:a802928f26b6 | 66 | // mount the filesystem |
mfiore | 0:a802928f26b6 | 67 | ret = SPIFFS_mount(&fs, &cfg, spiffs_work_buf, spiffs_fds, sizeof(spiffs_fds), spiffs_cache_buf, sizeof(spiffs_cache_buf), NULL); |
mfiore | 0:a802928f26b6 | 68 | if (ret) { |
mfiore | 0:a802928f26b6 | 69 | printf("SPIFFS_mount failed %d - can't continue\r\n", ret); |
mfiore | 0:a802928f26b6 | 70 | return 1; |
mfiore | 0:a802928f26b6 | 71 | } |
mfiore | 0:a802928f26b6 | 72 | |
mfiore | 0:a802928f26b6 | 73 | // write to the file |
mfiore | 0:a802928f26b6 | 74 | handle = SPIFFS_open(&fs, file, SPIFFS_CREAT | SPIFFS_RDWR | SPIFFS_APPEND, 0); |
mfiore | 0:a802928f26b6 | 75 | if (handle < 0) |
mfiore | 0:a802928f26b6 | 76 | printf("SPIFFS_open failed %d\r\n", SPIFFS_errno(&fs)); |
mfiore | 0:a802928f26b6 | 77 | |
mfiore | 0:a802928f26b6 | 78 | if (handle) { |
mfiore | 0:a802928f26b6 | 79 | ret = SPIFFS_write(&fs, handle, msg, sizeof(msg)); |
mfiore | 0:a802928f26b6 | 80 | if (ret < 0) |
mfiore | 0:a802928f26b6 | 81 | printf("SPIFFS_write failed %d\r\n", SPIFFS_errno(&fs)); |
mfiore | 0:a802928f26b6 | 82 | else |
mfiore | 0:a802928f26b6 | 83 | printf("wrote %d bytes\r\n", ret); |
mfiore | 0:a802928f26b6 | 84 | SPIFFS_close(&fs, handle); |
mfiore | 0:a802928f26b6 | 85 | } |
mfiore | 0:a802928f26b6 | 86 | |
mfiore | 0:a802928f26b6 | 87 | // read the current file contents |
mfiore | 0:a802928f26b6 | 88 | spiffs_stat stat; |
mfiore | 0:a802928f26b6 | 89 | memset(&stat, 0, sizeof(stat)); |
mfiore | 0:a802928f26b6 | 90 | ret = SPIFFS_stat(&fs, file, &stat); |
mfiore | 0:a802928f26b6 | 91 | if (ret) |
mfiore | 0:a802928f26b6 | 92 | printf("SPIFFS_stat failed %d\r\n", SPIFFS_errno(&fs)); |
mfiore | 0:a802928f26b6 | 93 | else |
mfiore | 0:a802928f26b6 | 94 | printf("file size: %d bytes\r\n", stat.size); |
mfiore | 0:a802928f26b6 | 95 | |
mfiore | 0:a802928f26b6 | 96 | handle = SPIFFS_open(&fs, file, SPIFFS_RDWR, 0); |
mfiore | 0:a802928f26b6 | 97 | if (handle < 0) |
mfiore | 0:a802928f26b6 | 98 | printf("SPIFFS_open failed %d\r\n", SPIFFS_errno(&fs)); |
mfiore | 0:a802928f26b6 | 99 | |
mfiore | 0:a802928f26b6 | 100 | if (handle) { |
mfiore | 0:a802928f26b6 | 101 | while (sdata.size() < stat.size) { |
mfiore | 0:a802928f26b6 | 102 | ret = SPIFFS_read(&fs, handle, data, stat.size - sdata.size() < sizeof(data) ? stat.size - sdata.size() : sizeof(data)); |
mfiore | 0:a802928f26b6 | 103 | if (ret < 0) { |
mfiore | 0:a802928f26b6 | 104 | printf("SPIFFS_read failed %d\r\n", SPIFFS_errno(&fs)); |
mfiore | 0:a802928f26b6 | 105 | continue; |
mfiore | 0:a802928f26b6 | 106 | } |
mfiore | 0:a802928f26b6 | 107 | printf("read %d bytes\r\n", ret); |
mfiore | 0:a802928f26b6 | 108 | sdata.append(data, ret); |
mfiore | 0:a802928f26b6 | 109 | } |
mfiore | 0:a802928f26b6 | 110 | |
mfiore | 0:a802928f26b6 | 111 | printf("data [\r\n"); |
mfiore | 0:a802928f26b6 | 112 | for (int i = 0; i < sdata.size(); i++) |
mfiore | 0:a802928f26b6 | 113 | printf("%c", sdata[i]); |
mfiore | 0:a802928f26b6 | 114 | printf("\r\n]\r\n"); |
mfiore | 0:a802928f26b6 | 115 | |
mfiore | 0:a802928f26b6 | 116 | SPIFFS_close(&fs, handle); |
mfiore | 0:a802928f26b6 | 117 | } |
mfiore | 0:a802928f26b6 | 118 | |
mfiore | 0:a802928f26b6 | 119 | printf("dragonfly spi flash example finished\r\n\r\n"); |
mfiore | 0:a802928f26b6 | 120 | |
mfiore | 0:a802928f26b6 | 121 | return 0; |
mfiore | 0:a802928f26b6 | 122 | } |