28 #ifndef PLATFORM_PCA10028_H_ 29 #define PLATFORM_PCA10028_H_ 39 #define LEDS_ACTIVE_STATE 0 50 #define BUTTONS_ACTIVE_STATE 0 52 #define BUTTON_PULL NRF_GPIO_PIN_PULLUP 58 #define RX_PIN_NUMBER 11 59 #define TX_PIN_NUMBER 9 60 #define CTS_PIN_NUMBER 10 61 #define RTS_PIN_NUMBER 8 66 #define DC_DC_CIRCUITRY true 70 #define LFCLK_XTAL_PRESENT true 73 #define HFCLK_XTAL_PRESENT true 76 #define BOARD_LFCLKSRC_STRUCT {.source = NRF_CLOCK_LF_SRC_XTAL, \ 79 .xtal_accuracy = NRF_CLOCK_LF_XTAL_ACCURACY_20_PPM} 81 #define BOARD_LFCLKSRC NRF_CLOCK_LFCLK_Xtal