SPI read Pixi Cam V1

Revision:
4:478d4d9193a1
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/mbed-os.lib	Mon Aug 23 11:26:37 2021 +0000
@@ -0,0 +1,1 @@
+https://github.com/ARMmbed/mbed-os/#9a8c9e2c297f64c805698d72cd541ff3cd7fe538
\ No newline at end of file