Out of the box, the ‘5V-SD-CS’ signal for the SDcard reader device is assigned to pin D9 on the Arduino. Where is this pin assignment made in Bill Porter’s library? I want to make pin 10 on the Arduino be the 5V-SD-CS signal (I assume this is the SDcard device chip select).
The SFEMP3Shield Library defines all of its hard resources and configurable options in the SFEMP3Shield.h file. The SdCard’s chipselect is defined with SD_SEL . Notice its how it sets up the sd.begin(SD_SEL, SPI_HALF_SPEED in the example. You can substitute any value you like into or in place of the SD_SEL. Assuming it is actually connected to the SdCards Chip Select.
Awesome, I found the define SD_SEL pin assignment in SFEMP3Shieldconfig.h. Changed it to pin 10, soldered in a new wire from D10 to pin 5 of the 74HC4050 converter, and it works perfectly. Now I can use pins 9 and 10 for Timer1.
