get SD card to work on the car lol

Author: Bvngee

Telemetry-SD-Card/main.cpp

@@ -1,4 +1,3 @@
-#include "./fsdaq_encoder_generated_from_dbc.hpp"
 #include "FATFileSystem.h"
 #include "SDBlockDevice.h"
 #include "mbed.h"
@@ -16,24 +15,6 @@ SDBlockDevice sd{
 // "sd" is the name of the filesystem; i.e. filepaths are /sd/...
 FATFileSystem fs{"sd"};
 
-// Our data
-Values vals{};
-ValuesRow current_row{};
-
-// Debug
-mbed_stats_heap_t heap;
-mbed_stats_stack_t stack;
-
-void print_mem_usage() {
-    mbed_stats_heap_get(&heap);
-    printf("\nHeap: %u/%u (used/reserved), max usage: %u, allocs: %u\n",
-           heap.current_size, heap.reserved_size, heap.max_size,
-           heap.alloc_cnt);
-    mbed_stats_stack_get(&stack);
-    printf("Stack: max usage: %u, bytes reserved: %u\n\n", stack.max_size,
-           stack.reserved_size);
-}
-
 void error_quit(std::string msg) {
     printf("%s\n", msg.c_str());
     while (1) {
@@ -49,8 +30,6 @@ int main(int argc, char *argv[]) {
     // TODO: experiment with async SPI and/or DMA
     // sd.set_async_spi_mode(true, DMAUsage::DMA_USAGE_ALWAYS);
 
-    print_mem_usage();
-
     // Mount the FATFileSystem (so we can use regular C file IO like fopen/read)
     int error = fs.mount(&sd);
     if (error) {
@@ -61,35 +40,14 @@ int main(int argc, char *argv[]) {
         if (error) error_quit("Error: could not reformat SD card! Is the SD card plugged in?\n");
     }
 
-    mkdir("/sd/fsdaqqqq", 0777);
-
-    print_mem_usage();
+    mkdir("/sd/testing", 0777);
 
-    FILE *file = fopen("/sd/fsdaqqqq/test.fsdaq", "w+");
+    FILE *file = fopen("/sd/testing/test.txt", "w+");
     if (file == NULL) {
         error_quit("Error opening file!");
     }
 
-    fwrite("FSDAQ001", 8, 1, file);
-
-    write_fsdaq_schema(file);
-
-    print_mem_usage();
-
-
-    for (int i=0; i<5; i++) {
-        memset(&current_row, INT_MAX, sizeof(current_row));
-        vals.setRow(current_row, i);
-    }
-    write_fsdaq_batch(&vals, file);
-    write_fsdaq_batch(&vals, file);
-    write_fsdaq_batch(&vals, file);
-    write_fsdaq_batch(&vals, file);
-    write_fsdaq_batch(&vals, file);
-
-    print_mem_usage();
-
-    fwrite("FSDAQ001", 8, 1, file);
+    fwrite("alksjdlkasjdklasjflka Hellow  World!!!", 100, 1, file);
 
     fclose(file);
 

Telemetry-SD-Card/main_fsdaq.cpp

@@ -0,0 +1,99 @@
+#include "./fsdaq_encoder_generated_from_dbc.hpp"
+#include "FATFileSystem.h"
+#include "SDBlockDevice.h"
+#include "mbed.h"
+
+// SDBlockDevice - lowest-level interfaces with the SD card.
+// Pin configurations and transfer speeds are set in mbed_app.json.
+SDBlockDevice sd{
+    MBED_CONF_SD_SPI_MOSI,
+    MBED_CONF_SD_SPI_MISO,
+    MBED_CONF_SD_SPI_CLK, 
+    MBED_CONF_SD_SPI_CS,
+    MBED_CONF_SD_TRX_FREQUENCY,
+};
+// FATFileSystem - Creates a FAT filesystem on the SDBlockDevice.
+// "sd" is the name of the filesystem; i.e. filepaths are /sd/...
+FATFileSystem fs{"sd"};
+
+// Our data
+Values vals{};
+ValuesRow current_row{};
+
+// Debug
+mbed_stats_heap_t heap;
+mbed_stats_stack_t stack;
+
+void print_mem_usage() {
+    mbed_stats_heap_get(&heap);
+    printf("\nHeap: %u/%u (used/reserved), max usage: %u, allocs: %u\n",
+           heap.current_size, heap.reserved_size, heap.max_size,
+           heap.alloc_cnt);
+    mbed_stats_stack_get(&stack);
+    printf("Stack: max usage: %u, bytes reserved: %u\n\n", stack.max_size,
+           stack.reserved_size);
+}
+
+void error_quit(std::string msg) {
+    printf("%s\n", msg.c_str());
+    while (1) {
+    };
+}
+
+int main(int argc, char *argv[]) {
+    printf("Hello World!\n");
+
+    // Enable debug logging (to be turned off)
+    sd.debug(true);
+
+    // TODO: experiment with async SPI and/or DMA
+    // sd.set_async_spi_mode(true, DMAUsage::DMA_USAGE_ALWAYS);
+
+    print_mem_usage();
+
+    // Mount the FATFileSystem (so we can use regular C file IO like fopen/read)
+    int error = fs.mount(&sd);
+    if (error) {
+        // Reformat if we can't mount the filesystem.
+        // This should only happen on the first boot
+        printf("No filesystem found, formatting...\n");
+        error = fs.reformat(&sd);
+        if (error) error_quit("Error: could not reformat SD card! Is the SD card plugged in?\n");
+    }
+
+    mkdir("/sd/fsdaqqqq", 0777);
+
+    print_mem_usage();
+
+    FILE *file = fopen("/sd/fsdaqqqq/test.fsdaq", "w+");
+    if (file == NULL) {
+        error_quit("Error opening file!");
+    }
+
+    fwrite("FSDAQ001", 8, 1, file);
+
+    write_fsdaq_schema(file);
+
+    print_mem_usage();
+
+
+    for (int i=0; i<5; i++) {
+        memset(&current_row, INT_MAX, sizeof(current_row));
+        vals.setRow(current_row, i);
+    }
+    write_fsdaq_batch(&vals, file);
+    write_fsdaq_batch(&vals, file);
+    write_fsdaq_batch(&vals, file);
+    write_fsdaq_batch(&vals, file);
+    write_fsdaq_batch(&vals, file);
+
+    print_mem_usage();
+
+    fwrite("FSDAQ001", 8, 1, file);
+
+    fclose(file);
+
+    printf("Goodbye World!\n\n");
+    while (1) {
+    };
+}

Telemetry-SD-Card/mbed_app.json5

@@ -29,10 +29,10 @@
       "sd.SPI_CS": "D3",
     },
     "NUCLEO_F446RE": {
-      "sd.SPI_MOSI": "D11",
-      "sd.SPI_MISO": "D12",
-      "sd.SPI_CLK": "D13",
-      "sd.SPI_CS": "D10",
+      "sd.SPI_MOSI": "PB_15",
+      "sd.SPI_MISO": "PB_14",
+      "sd.SPI_CLK": "PB_13",
+      "sd.SPI_CS": "PB_12",
     },
   }
 }