Bk2461 Datasheet -

// 4. Load 32 bytes into TX FIFO SPI_Write_Burst(0xA0, my_data, 32); // 0xA0 is TX payload command

Want the actual register map? Go download the raw datasheet. But now you know where the bodies are buried. bk2461 datasheet

// 3. Set to MAX POWER SPI_Write(REG6, 0x00); // 5. Fire! GPIO_High(CE)

// 5. Fire! GPIO_High(CE); delay_us(10); GPIO_Low(CE); bk2461 datasheet