M J.
Nucleo-L476RG using SD-CARD library. The program is functioning but might get problem if you update the mbed. In two different times I got problem with mbed library as no SPI clock was generated. At the time I publish this library the mbed is broken.
Revision 0:fdd58267bc13, committed 2017-04-07
- Comitter:
- mjm2016
- Date:
- Fri Apr 07 10:33:54 2017 +0000
- Commit message:
- Reference code for testing SD-Card with MBED-OS. ; The SD-Card works with this revision, but updating MBED-OS might cause problem. I can confirm that the current mbed-rev at 2017-04-07 is broken. ; Use this sample code as reference
Changed in this revision
diff -r 000000000000 -r fdd58267bc13 SDFileSystem.lib --- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/SDFileSystem.lib Fri Apr 07 10:33:54 2017 +0000 @@ -0,0 +1,1 @@ +http://mbed.org/users/mbed_official/code/SDFileSystem/#8db0d3b02cec
diff -r 000000000000 -r fdd58267bc13 main.cpp
--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/main.cpp Fri Apr 07 10:33:54 2017 +0000
@@ -0,0 +1,34 @@
+#include "mbed.h"
+#include "SDFileSystem.h"
+//Nucleo L476RG_SDCARD test
+
+
+
+/* SD: Description nucleo PINNR (from top to down of the right-connector-left pins):
+ 1 CS PB_6 9
+ 2 MOSI PA_7 8
+ 3 GND GND
+ 4 3.3V 3.3V
+ 5 SCLK PA_5 6
+ 6 -
+ 7 MISO PA_6 7
+ 8
+
+*/
+// MOSI, MISO, SCLK, CS, name
+SDFileSystem sd(PA_7, PA_6, PA_5, PB_6, "sd");
+
+
+int main() {
+ printf("\nWait for new connection...\n");
+
+ mkdir("/sd/mydir", 0777);
+ printf("\nDirectory created\n");
+ FILE *fp = fopen("/sd/mydir/sdtest.txt", "w");
+ if(fp == NULL) {
+ printf("Could not open file for write\n");
+ }
+ fprintf(fp, "Hello fun SD Card World!");
+ fclose(fp);
+ printf("Text written to the SD-CARD\n");
+}
diff -r 000000000000 -r fdd58267bc13 mbed-os.lib --- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/mbed-os.lib Fri Apr 07 10:33:54 2017 +0000 @@ -0,0 +1,1 @@ +https://github.com/ARMmbed/mbed-os/#34c1facf42a174f47fdf9002cd8c6bf10ac41744