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Updated Readme example to handle return values

pull/7774/head
Deepika 2017-07-11 16:39:23 -05:00
parent 46b2c0623f
commit e2dbe1fae7
1 changed files with 15 additions and 10 deletions
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@ -383,19 +383,24 @@ The following sample code illustrates how to use the sd-driver Block Device API:
int main() int main()
{ {
// call the SDBlockDevice instance initialisation method. // call the SDBlockDevice instance initialisation method.
sd.init(); if ( 0 != sd.init()) {
printf("Init failed \n");
return -1;
}
// set the frequency // set the frequency
sd.frequency(25000000); if ( 0 != sd.frequency(5000000)) {
printf("Error setting frequency \n");
}
// Write some the data block to the device // Write some the data block to the device
sd.program(block, 0, 512); if ( 0 == sd.program(block, 0, 512)) {
// read the data block from the device
// read the data block from the device if ( 0 == sd.read(block, 0, 512)) {
sd.read(block, 0, 512); // print the contents of the block
printf("%s", block);
// print the contents of the block }
printf("%s", block); }
// call the SDBlockDevice instance de-initialisation method. // call the SDBlockDevice instance de-initialisation method.
sd.deinit(); sd.deinit();