diff --git a/README.md b/README.md index d3eec92..39adb70 100644 --- a/README.md +++ b/README.md @@ -49,19 +49,19 @@ connections Connect the peripherals the following way (peripheral signal; peripheral signal; micro-controller pin; micro-controller signal; comment): -- DS1307 RTC +- DS1307 RTC to get the date - VCC; 8; ; +5V; - GND; 4; ; GND; - - SCL; 6; PB10; I2C2_SCL; to get the date - - SDA; 5; PB11; I2C2_SDA; to get the date + - SCL; 6; PB10; I2C2_SCL; + - SDA; 5; PB11; I2C2_SDA; - SQW; 7; ;; to synchronize the seconds -- 2x MAX7219 in chain +- 2x MAX7219 in chain to show date and time - VCC; 19; ; +5V; - GND; 4; ; GND; - - CLK; 13; ; ; - - DIN; 1; ; ; - - LOAD; 12; ; ; -- 7x TM1627 with multiplexed clock line + - CLK; 13; PB13; SPI2_CLK; + - DIN; 1; PB15; SPI2_MOSI; + - LOAD; 12; PB12; SPI2_NSS; used as GPIO +- 7x TM1627 (with multiplexed clock line) to show the recording numbers - VDD; 16; ; +5V; - GND; 1; ; GND; - CLK; 18; PB6; GPIO