rework structure

hifive1-vp/riscv-bldc-forced-commutation/src/io/uart.h

@@ -0,0 +1,83 @@
+/*
+ * spi.h
+ *
+ *  Created on: 29.07.2018
+ *      Author: eyck
+ */
+
+#ifndef UART_H_
+#define UART_H_
+
+#include <sifive/devices/uart.h>
+#include "util/bit_field.h"
+#include <cstdint>
+
+template<uint32_t BASE_ADDR>
+class uart_regs {
+public:
+    BEGIN_BF_DECL(txdata_t, uint32_t);
+        BF_FIELD(data, 0, 8);
+        BF_FIELD(full, 31, 1);
+    END_BF_DECL() ;
+
+    BEGIN_BF_DECL(rxdata_t, uint32_t);
+        BF_FIELD(data, 0, 8);
+        BF_FIELD(empty, 31, 1);
+    END_BF_DECL();
+
+    BEGIN_BF_DECL(txctrl_t, uint32_t);
+        BF_FIELD(txen, 0, 1);
+        BF_FIELD(nstop, 1, 1);
+        BF_FIELD(txcnt, 16, 3);
+    END_BF_DECL();
+
+    BEGIN_BF_DECL(rxctrl_t, uint32_t);
+        BF_FIELD(rxen, 0, 1);
+        BF_FIELD(rxcnt, 16, 3);
+    END_BF_DECL();
+
+    BEGIN_BF_DECL(ie_t, uint32_t);
+        BF_FIELD(txwm, 0, 1);
+        BF_FIELD(rxwm, 1, 1);
+    END_BF_DECL();
+
+    BEGIN_BF_DECL(ip_t, uint32_t);
+        BF_FIELD(txwm, 0, 1);
+        BF_FIELD(rxwm, 1, 1);
+    END_BF_DECL();
+
+    BEGIN_BF_DECL(div_t, uint32_t);
+        BF_FIELD(div, 0, 16);
+    END_BF_DECL();
+
+    static inline txdata_t& txdata_reg(){
+        return *reinterpret_cast<txdata_t*>(BASE_ADDR+UART_REG_TXFIFO);
+    }
+
+    static inline rxdata_t& rxdata_reg(){
+        return *reinterpret_cast<rxdata_t*>(BASE_ADDR+UART_REG_RXFIFO);
+    }
+
+    static inline txctrl_t& txctrl_reg(){
+        return *reinterpret_cast<txctrl_t*>(BASE_ADDR+UART_REG_TXCTRL);
+    }
+
+    static inline rxctrl_t& rxctrl_reg(){
+        return *reinterpret_cast<rxctrl_t*>(BASE_ADDR+UART_REG_RXCTRL);
+    }
+
+    static inline ie_t& ie_reg(){
+        return *reinterpret_cast<ie_t*>(BASE_ADDR+UART_REG_IE);
+    }
+
+    static inline ip_t& ip_reg(){
+        return *reinterpret_cast<ip_t*>(BASE_ADDR+UART_REG_IP);
+    }
+
+    static inline div_t& div_reg(){
+        return *reinterpret_cast<div_t*>(BASE_ADDR+UART_REG_DIV);
+    }
+
+};
+
+#endif /* SPI_H_ */