Exercise3
Dependencies: BSP_B-L475E-IOT01
main.cpp@0:40a58635c6be, 2018-12-06 (annotated)
- Committer:
- mcalzana
- Date:
- Thu Dec 06 16:58:39 2018 +0000
- Revision:
- 0:40a58635c6be
Exercise3
Who changed what in which revision?
User | Revision | Line number | New contents of line |
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mcalzana | 0:40a58635c6be | 1 | |
mcalzana | 0:40a58635c6be | 2 | #include "mbed.h" |
mcalzana | 0:40a58635c6be | 3 | #include <stdio.h> |
mcalzana | 0:40a58635c6be | 4 | #include <errno.h> |
mcalzana | 0:40a58635c6be | 5 | |
mcalzana | 0:40a58635c6be | 6 | // Block devices |
mcalzana | 0:40a58635c6be | 7 | #if COMPONENT_SPIF |
mcalzana | 0:40a58635c6be | 8 | #include "SPIFBlockDevice.h" |
mcalzana | 0:40a58635c6be | 9 | #endif |
mcalzana | 0:40a58635c6be | 10 | |
mcalzana | 0:40a58635c6be | 11 | #if COMPONENT_DATAFLASH |
mcalzana | 0:40a58635c6be | 12 | #include "DataFlashBlockDevice.h" |
mcalzana | 0:40a58635c6be | 13 | #endif |
mcalzana | 0:40a58635c6be | 14 | |
mcalzana | 0:40a58635c6be | 15 | #if COMPONENT_SD |
mcalzana | 0:40a58635c6be | 16 | #include "SDBlockDevice.h" |
mcalzana | 0:40a58635c6be | 17 | #endif |
mcalzana | 0:40a58635c6be | 18 | |
mcalzana | 0:40a58635c6be | 19 | #include "HeapBlockDevice.h" |
mcalzana | 0:40a58635c6be | 20 | |
mcalzana | 0:40a58635c6be | 21 | // File systems |
mcalzana | 0:40a58635c6be | 22 | #include "LittleFileSystem.h" |
mcalzana | 0:40a58635c6be | 23 | #include "FATFileSystem.h" |
mcalzana | 0:40a58635c6be | 24 | |
mcalzana | 0:40a58635c6be | 25 | #include "stm32l475e_iot01_tsensor.h" |
mcalzana | 0:40a58635c6be | 26 | |
mcalzana | 0:40a58635c6be | 27 | // Physical block device, can be any device that supports the BlockDevice API |
mcalzana | 0:40a58635c6be | 28 | /*SPIFBlockDevice bd( |
mcalzana | 0:40a58635c6be | 29 | MBED_CONF_SPIF_DRIVER_SPI_MOSI, |
mcalzana | 0:40a58635c6be | 30 | MBED_CONF_SPIF_DRIVER_SPI_MISO, |
mcalzana | 0:40a58635c6be | 31 | MBED_CONF_SPIF_DRIVER_SPI_CLK, |
mcalzana | 0:40a58635c6be | 32 | MBED_CONF_SPIF_DRIVER_SPI_CS);*/ |
mcalzana | 0:40a58635c6be | 33 | |
mcalzana | 0:40a58635c6be | 34 | #define BLOCK_SIZE 512 |
mcalzana | 0:40a58635c6be | 35 | HeapBlockDevice bd(4096, BLOCK_SIZE); |
mcalzana | 0:40a58635c6be | 36 | |
mcalzana | 0:40a58635c6be | 37 | // File system declaration |
mcalzana | 0:40a58635c6be | 38 | LittleFileSystem fs("fs"); |
mcalzana | 0:40a58635c6be | 39 | |
mcalzana | 0:40a58635c6be | 40 | // Set up the button to trigger an erase |
mcalzana | 0:40a58635c6be | 41 | InterruptIn irq(BUTTON1); |
mcalzana | 0:40a58635c6be | 42 | void erase() { |
mcalzana | 0:40a58635c6be | 43 | printf("Initializing the block device... "); |
mcalzana | 0:40a58635c6be | 44 | fflush(stdout); |
mcalzana | 0:40a58635c6be | 45 | int err = bd.init(); |
mcalzana | 0:40a58635c6be | 46 | printf("%s\n", (err ? "Fail :(" : "OK")); |
mcalzana | 0:40a58635c6be | 47 | if (err) { |
mcalzana | 0:40a58635c6be | 48 | error("error: %s (%d)\n", strerror(-err), err); |
mcalzana | 0:40a58635c6be | 49 | } |
mcalzana | 0:40a58635c6be | 50 | |
mcalzana | 0:40a58635c6be | 51 | printf("Erasing the block device... "); |
mcalzana | 0:40a58635c6be | 52 | fflush(stdout); |
mcalzana | 0:40a58635c6be | 53 | err = bd.erase(0, bd.size()); |
mcalzana | 0:40a58635c6be | 54 | printf("%s\n", (err ? "Fail :(" : "OK")); |
mcalzana | 0:40a58635c6be | 55 | if (err) { |
mcalzana | 0:40a58635c6be | 56 | error("error: %s (%d)\n", strerror(-err), err); |
mcalzana | 0:40a58635c6be | 57 | } |
mcalzana | 0:40a58635c6be | 58 | |
mcalzana | 0:40a58635c6be | 59 | printf("Deinitializing the block device... "); |
mcalzana | 0:40a58635c6be | 60 | fflush(stdout); |
mcalzana | 0:40a58635c6be | 61 | err = bd.deinit(); |
mcalzana | 0:40a58635c6be | 62 | printf("%s\n", (err ? "Fail :(" : "OK")); |
mcalzana | 0:40a58635c6be | 63 | if (err) { |
mcalzana | 0:40a58635c6be | 64 | error("error: %s (%d)\n", strerror(-err), err); |
mcalzana | 0:40a58635c6be | 65 | } |
mcalzana | 0:40a58635c6be | 66 | } |
mcalzana | 0:40a58635c6be | 67 | |
mcalzana | 0:40a58635c6be | 68 | |
mcalzana | 0:40a58635c6be | 69 | // Entry point for the example |
mcalzana | 0:40a58635c6be | 70 | |
mcalzana | 0:40a58635c6be | 71 | Ticker toggle_write_to_file; |
mcalzana | 0:40a58635c6be | 72 | EventQueue queue(16 * EVENTS_EVENT_SIZE); |
mcalzana | 0:40a58635c6be | 73 | Thread t; |
mcalzana | 0:40a58635c6be | 74 | static FILE *f; |
mcalzana | 0:40a58635c6be | 75 | InterruptIn button(USER_BUTTON); |
mcalzana | 0:40a58635c6be | 76 | |
mcalzana | 0:40a58635c6be | 77 | void writeTemToFile(){ |
mcalzana | 0:40a58635c6be | 78 | float temp = BSP_TSENSOR_ReadTemp(); |
mcalzana | 0:40a58635c6be | 79 | printf("\nTEMPERATURE = %.2f degC\n", temp); |
mcalzana | 0:40a58635c6be | 80 | |
mcalzana | 0:40a58635c6be | 81 | fprintf(f, "%f\n", temp); |
mcalzana | 0:40a58635c6be | 82 | fflush(stdout); |
mcalzana | 0:40a58635c6be | 83 | fflush(f); |
mcalzana | 0:40a58635c6be | 84 | } |
mcalzana | 0:40a58635c6be | 85 | |
mcalzana | 0:40a58635c6be | 86 | void readTempFile(){ |
mcalzana | 0:40a58635c6be | 87 | fflush(stdout); |
mcalzana | 0:40a58635c6be | 88 | fflush(f); |
mcalzana | 0:40a58635c6be | 89 | fseek(f, 0, SEEK_SET); |
mcalzana | 0:40a58635c6be | 90 | printf("Temperature time line: \n"); |
mcalzana | 0:40a58635c6be | 91 | while (!feof(f)) { |
mcalzana | 0:40a58635c6be | 92 | float temp; |
mcalzana | 0:40a58635c6be | 93 | fscanf(f, "%f", &temp); |
mcalzana | 0:40a58635c6be | 94 | printf("%f degC ", temp); |
mcalzana | 0:40a58635c6be | 95 | } |
mcalzana | 0:40a58635c6be | 96 | printf("\n"); |
mcalzana | 0:40a58635c6be | 97 | fflush(stdout); |
mcalzana | 0:40a58635c6be | 98 | } |
mcalzana | 0:40a58635c6be | 99 | |
mcalzana | 0:40a58635c6be | 100 | void readSensorInterupt() { |
mcalzana | 0:40a58635c6be | 101 | queue.call(writeTemToFile); |
mcalzana | 0:40a58635c6be | 102 | } |
mcalzana | 0:40a58635c6be | 103 | |
mcalzana | 0:40a58635c6be | 104 | void printSensorInterupt() { |
mcalzana | 0:40a58635c6be | 105 | queue.call(readTempFile); |
mcalzana | 0:40a58635c6be | 106 | } |
mcalzana | 0:40a58635c6be | 107 | |
mcalzana | 0:40a58635c6be | 108 | int main() { |
mcalzana | 0:40a58635c6be | 109 | // Setup the erase event on button press, use the event queue |
mcalzana | 0:40a58635c6be | 110 | // to avoid running in interrupt context |
mcalzana | 0:40a58635c6be | 111 | irq.fall(mbed_event_queue()->event(erase)); |
mcalzana | 0:40a58635c6be | 112 | |
mcalzana | 0:40a58635c6be | 113 | // Try to mount the filesystem |
mcalzana | 0:40a58635c6be | 114 | printf("Mounting the filesystem... "); |
mcalzana | 0:40a58635c6be | 115 | fflush(stdout); |
mcalzana | 0:40a58635c6be | 116 | int err = fs.mount(&bd); |
mcalzana | 0:40a58635c6be | 117 | printf("%s\n", (err ? "Fail :(" : "OK")); |
mcalzana | 0:40a58635c6be | 118 | if (err) { |
mcalzana | 0:40a58635c6be | 119 | // Reformat if we can't mount the filesystem |
mcalzana | 0:40a58635c6be | 120 | // this should only happen on the first boot |
mcalzana | 0:40a58635c6be | 121 | printf("No filesystem found, formatting... "); |
mcalzana | 0:40a58635c6be | 122 | fflush(stdout); |
mcalzana | 0:40a58635c6be | 123 | err = fs.reformat(&bd); |
mcalzana | 0:40a58635c6be | 124 | printf("%s\n", (err ? "Fail :(" : "OK")); |
mcalzana | 0:40a58635c6be | 125 | if (err) { |
mcalzana | 0:40a58635c6be | 126 | error("error: %s (%d)\n", strerror(-err), err); |
mcalzana | 0:40a58635c6be | 127 | } |
mcalzana | 0:40a58635c6be | 128 | } |
mcalzana | 0:40a58635c6be | 129 | |
mcalzana | 0:40a58635c6be | 130 | // Open the numbers file |
mcalzana | 0:40a58635c6be | 131 | printf("Opening \"/fs/numbers.txt\"... "); |
mcalzana | 0:40a58635c6be | 132 | fflush(stdout); |
mcalzana | 0:40a58635c6be | 133 | f = fopen("/fs/numbers.txt", "r +"); |
mcalzana | 0:40a58635c6be | 134 | printf("%s\n", (!f ? "Fail :(" : "OK")); |
mcalzana | 0:40a58635c6be | 135 | if (!f) { |
mcalzana | 0:40a58635c6be | 136 | // Create the numbers file if it doesn't exist |
mcalzana | 0:40a58635c6be | 137 | printf("No file found, creating a new file... "); |
mcalzana | 0:40a58635c6be | 138 | fflush(stdout); |
mcalzana | 0:40a58635c6be | 139 | f = fopen("/fs/numbers.txt", "w+"); |
mcalzana | 0:40a58635c6be | 140 | printf("%s\n", (!f ? "Fail :(" : "OK")); |
mcalzana | 0:40a58635c6be | 141 | if (!f) { |
mcalzana | 0:40a58635c6be | 142 | error("error: %s (%d)\n", strerror(errno), -errno); |
mcalzana | 0:40a58635c6be | 143 | } |
mcalzana | 0:40a58635c6be | 144 | |
mcalzana | 0:40a58635c6be | 145 | printf("Seeking file... "); |
mcalzana | 0:40a58635c6be | 146 | fflush(stdout); |
mcalzana | 0:40a58635c6be | 147 | err = fseek(f, 0, SEEK_SET); |
mcalzana | 0:40a58635c6be | 148 | printf("%s\n", (err < 0 ? "Fail :(" : "OK")); |
mcalzana | 0:40a58635c6be | 149 | if (err < 0) { |
mcalzana | 0:40a58635c6be | 150 | error("error: %s (%d)\n", strerror(errno), -errno); |
mcalzana | 0:40a58635c6be | 151 | } |
mcalzana | 0:40a58635c6be | 152 | } |
mcalzana | 0:40a58635c6be | 153 | |
mcalzana | 0:40a58635c6be | 154 | t.start(callback(&queue, &EventQueue::dispatch_forever)); |
mcalzana | 0:40a58635c6be | 155 | printf("Start sampling... \n"); |
mcalzana | 0:40a58635c6be | 156 | BSP_TSENSOR_Init(); |
mcalzana | 0:40a58635c6be | 157 | toggle_write_to_file.attach(&readSensorInterupt, 5); |
mcalzana | 0:40a58635c6be | 158 | button.rise(&printSensorInterupt); |
mcalzana | 0:40a58635c6be | 159 | } |