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-STM32F103C8Tx medium-density LQFP48
-
-Pin mapping: see datasheet Table 5
-
-## GPIO inputs
-
-Analog RX AGC measurement (S-Meter)
- * PA5
-
-Digital buttons
- * BTN0 PB1
- * BTN1 PB0
- * BTN2 PB12
- * BTN3 PB13
-
-Digital rotary encoder
- * ENC_A PA6 (TIM3 CH1)
- * ENC_B PA7 (TIM3 CH2)
- * ENC_BTN PC15 (limited current)
-
-CW paddle
- * CW_TIP PB8
- * CW_RING PB9
-
-CW output
- * Sidetone PA8 (TIM1 CH1)
-
-Microphone switches
- * SW1 PA3 ADC12_IN3
- * SW2 PA4 ADC12_IN4
-
-## GPIO outputs
-
- * SEQ0n PB3
- * SEQ1 PB4
- * SEQ2 PB5
- * CW_KEYn PA15
- * MUTE_SPKR PA2
- * MUTE_MICn PA1
-
-## I2C1 for Si5351A-B-GT
-
- * SCL PB6 default alternate function
- * SDA PB7 default alternate function
-
-## I2C2 for Display, on address 0100<A2><A1><A0> depending on the solder bridges.
-
- * SCL PB10 default alternate function
- * SDA PB11 default alternate function
-
-## Timers
-
-TIM1 is an advanced control timer, TIM2,3,4 are general purpose
-
- * TIM1 CW Sidetone PWM output
- * TIM2 Clock timer
- * TIM3 QEI decoder
- * TIM4