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Accessing Multiple Files on SDCard

SD Card Help

Here’s a simple example showing how to use the VCS SD card save and load file API. This saves some information into a file called “test.h” on the SD card and then reads it back again. #include "robot-config.h" // storage for some information to save uint8_t myTestData[ 100 ]; uint8_t myReadBuffer[ 1000 ]; int main() { // set the test data to something detectable for(int i=0;i<100;i++) { myTestData* = i * 2; } // write test data to SD Card int nWritten…

SD Card Help

Here, this is what it should be #include "robot-config.h" // storage for some information to save uint8_t myTestData[ 100 ]; uint8_t myReadBuffer[ 1000 ]; int main() { // set the test data to something detectable for(int i=0;i<100;i++) { myTestData[i] = i * 2; } // write test data to SD Card int nWritten = Brain.SDcard.savefile( "test.h", myTestData, sizeof(myTestData) ); // did that work ? if( nWritten > 0) { // display on screen how …

SD Card errors

the sdcard functions all require a buffer pointer, not values like you are passing. If you really want to write binary data, it might be something like this. int x = 23; Brain.SDcard.appendfile("file", (uint8_t *)&x, sizeof(int) ); to write the values as text, you need to convert to a string. int x = 23; char buffer[32]; sprintf(buffer, "%d", x ); Brain.SDcard.appendfile("file", (uint8_t *)buffer, strlen(buffer) ); make sure the file exists if you want to use appen…

Error reading from sdcard - #4 by jpearman

Differences in the SD Card commands bug - #3 by jpearman

What SD cards are supported for the V5 Brain? - #7 by jpearman