STM32: Fix spi.write usage on same port that SD card is used with (fix #2613)

Author: gfwilliams

ChangeLog

@@ -18,6 +18,7 @@
             Pipboy: Pip.audioStartVar(wav,{overlap:true}) can now play sounds over the top of other sounds. audioRead now doesn't stop audio playback
             STM32: Ensure proper distribution of analogRead values (now `0<=analogRead()<1` as on other boards) and add docs (fix #2612)
             Change ioBuffer FIFO from 4 byte blocks to variable length blocks. Far more efficient for USB/BLE/other block data
+            STM32: Fix spi.write usage on same port that SD card is used with (fix #2613)
 
      2v25 : ESP32C3: Get analogRead working correctly
             Graphics: Adjust image alignment when rotating images to avoid cropping (fix #2535)

src/jsspi.c

@@ -26,6 +26,7 @@ void jsspiDumpSPIInfo(JshSPIInfo *inf) {
 
 void jsspiHardwareFunc(unsigned char *tx, unsigned char *rx, unsigned int len, spi_sender_data *info) {
   IOEventFlags device = *(IOEventFlags*)info;
+  jshSPISetReceive(device, rx!=NULL); // ensure we set if we want to receive or not, fix #2613
   jshSPISendMany(device, tx, rx, len, NULL/*no callback - sync*/);
 }