初始化提交

arduino-cli/libraries/RF24/utility/RPi/spi.h

@@ -0,0 +1,100 @@
+/*
+ * TMRh20 2015
+ * SPI layer for RF24 <-> BCM2835
+ */
+/**
+ * @file spi.h
+ * \cond HIDDEN_SYMBOLS
+ * Class declaration for SPI helper files
+ */
+#ifndef _SPI_H_INCLUDED
+#define _SPI_H_INCLUDED
+
+#include <stdio.h>
+#include "bcm2835.h"
+#include "interrupt.h"
+#include "../../RF24_config.h"
+
+#define SPI_HAS_TRANSACTION
+#define MSBFIRST BCM2835_SPI_BIT_ORDER_MSBFIRST
+#define SPI_MODE0 BCM2835_SPI_MODE0
+//#define RF24_SPI_SPEED 10000000 //BCM2835_SPI_SPEED_4MHZ
+
+class SPISettings {
+public:
+    SPISettings(uint32_t clock, uint8_t bitOrder, uint8_t dataMode)
+    {
+        init(clock, bitOrder, dataMode);
+    }
+
+    SPISettings()
+    {
+        init(RF24_SPI_SPEED, MSBFIRST, SPI_MODE0);
+    }
+
+    uint32_t clck;
+    uint8_t border;
+    uint8_t dmode;
+private:
+
+    void init(uint32_t clock, uint8_t bitOrder, uint8_t dataMode)
+    {
+        clck = clock;
+        border = bitOrder;
+        dmode = dataMode;
+    }
+
+    friend class SPIClass;
+};
+
+class SPI {
+public:
+
+    SPI();
+
+    virtual ~SPI();
+
+    inline static uint8_t transfer(uint8_t _data);
+
+    inline static void transfernb(char* tbuf, char* rbuf, uint32_t len);
+
+    inline static void transfern(char* buf, uint32_t len);
+
+    static void begin(int busNo, uint32_t spi_speed = RF24_SPI_SPEED);
+
+    static void end();
+
+    static void setBitOrder(uint8_t bit_order);
+
+    static void setDataMode(uint8_t data_mode);
+
+    static void setClockDivider(uint32_t spi_speed);
+
+    static void chipSelect(int csn_pin);
+
+    static void beginTransaction(SPISettings settings);
+
+    static void endTransaction();
+
+
+};
+
+uint8_t SPI::transfer(uint8_t _data)
+{
+    uint8_t data = bcm2835_spi_transfer(_data);
+    return data;
+}
+
+void SPI::transfernb(char* tbuf, char* rbuf, uint32_t len)
+{
+    bcm2835_spi_transfernb(tbuf, rbuf, len);
+}
+
+void SPI::transfern(char* buf, uint32_t len)
+{
+    transfernb(buf, buf, len);
+}
+/**
+ * \endcond
+ */
+#endif