test-display: README

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+Assignment of peripherals and pins
+==================================
+
+I2C1   display
+USART1 debugging
+
+
+                          Blue Pill pinout
+                       +--------------------+
+                       | VBATT         3.3V |
+BluePill LED           | PC13           GND |  display power
+                       | PC14            5V |  display power (white side of connector)
+                       | PC15           PB9 |
+                       | PA0            PB8 |  SFH5110 output (white side of connector)
+                       | PA1            PB7 |  SDA1 display (white side of connector)
+                       | PA2            PB6 |  SCL1 display
+                       | PA3            PB5 |
+                       | PA4            PB4 |
+                       | PA5            PB3 |
+                       | PA6           PA15 |
+                       | PA7           PA12 |
+                       | PB0           PA11 |
+                       | PB1           PA10 |  RXD1 - debugging console
+                       | PB10           PA9 |  TXD1 - debugging console
+                       | PB11           PA8 |
+                       | RESET         PB15 |
+                       | 3.3 V         PB14 |
+                       | GND           PB13 |
+                       | GND           PB12 |
+                       +--------------------+