//PA9 -----> Tx
//PA10 -----> Rx
//***************************
// STM32 ADS1256
// GPIOB_Pin_11 --- DRDY
// GPIOB_Pin_12 --- CS
// GPIOB_Pin_13 --- SCK
// GPIOB_Pin_14 --- DOUT
// GPIOB_Pin_15 --- DIN
// 3.3 --- RST_N
//***************************