Revision 1:576dbeb04958, committed 2017-02-23

Comitter:

mimi3

Date:

Thu Feb 23 00:15:12 2017 +0900

Parent:

0:2aeb36a518c1

Child:

2:1faa28f1a5bb

Commit message:

add: files

Changed in this revision

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/DirectSPI.cpp	Thu Feb 23 00:15:12 2017 +0900
@@ -0,0 +1,67 @@
+#include "DirectSPI.h"
+
+#define isTXE(spi)     (spi->SR & SPI_SR_TXE)
+#define isRXNE(spi)    (spi->SR & SPI_SR_RXNE)
+#define SPIBUF8(spi)   *(__IO uint8_t  *)&spi->DR
+#define SPIBUF16(spi)  spi->DR
+
+#if DEVICE_SPI_ASYNCH
+    #define SPI_S(obj)    (( struct spi_s *)(obj))
+    //#define SPI_S(obj)    (( struct spi_s *)(&(obj->spi)))
+#else
+    #define SPI_S(obj)    (( struct spi_s *)(obj))
+#endif
+
+DirectSPI::DirectSPI(PinName mosi, PinName miso, PinName sclk) : SPI(mosi, miso, sclk) {
+    spi = spi_get_id(mosi, miso, sclk, NC);
+#if TODO
+    struct spi_s *spiobj = SPI_S(spi);
+    SPI_HandleTypeDef *handle = &(spiobj->handle);
+    is16bit = (handle->Init.DataSize == SPI_DATASIZE_16BIT);
+    spiSend = is16bit ? &DirectSPI::spiSend16 : &DirectSPI::spiSend8;
+#endif
+}
+
+#if TODO
+uint16_t DirectSPI::directWrite(uint16_t data) {
+    if(is16bit){
+        while(!isTXE(spi));
+        SPIBUF16(spi) = data;
+        while(!isRXNE(spi));
+        return SPIBUF16(spi);
+    } else {
+        while(!isTXE(spi));
+        SPIBUF8(spi) = data;
+        while(!isRXNE(spi));
+        return SPIBUF8(spi);
+    }
+}
+#endif
+
+uint16_t DirectSPI::directWrite8(uint16_t data) {
+    while(!isTXE(spi));
+    SPIBUF8(spi) = data;
+    while(!isRXNE(spi));
+    return SPIBUF8(spi);
+}
+
+uint16_t DirectSPI::directWrite16(uint16_t data) {
+    while(!isTXE(spi));
+    SPIBUF16(spi) = data;
+    while(!isRXNE(spi));
+    return SPIBUF16(spi);
+}
+
+SPI_TypeDef *DirectSPI::spi_get_id( PinName mosi, PinName miso, PinName sclk, PinName ssel) {
+    // Determine the SPI to use
+    SPIName spi_mosi = (SPIName)pinmap_peripheral(mosi, PinMap_SPI_MOSI);
+    SPIName spi_miso = (SPIName)pinmap_peripheral(miso, PinMap_SPI_MISO);
+    SPIName spi_sclk = (SPIName)pinmap_peripheral(sclk, PinMap_SPI_SCLK);
+    SPIName spi_ssel = (SPIName)pinmap_peripheral(ssel, PinMap_SPI_SSEL);
+
+    SPIName spi_data = (SPIName)pinmap_merge(spi_mosi, spi_miso);
+    SPIName spi_cntl = (SPIName)pinmap_merge(spi_sclk, spi_ssel);
+
+    return (SPI_TypeDef *) ( (SPIName)pinmap_merge(spi_data, spi_cntl) );
+}
+

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/DirectSPI.h	Thu Feb 23 00:15:12 2017 +0900
@@ -0,0 +1,24 @@
+#include "mbed.h"
+#include "PeripheralPins.h"
+#define TODO    0
+
+class DirectSPI : public SPI
+{
+public:
+    DirectSPI(PinName mosi, PinName miso, PinName sclk);
+    uint16_t directWrite8(uint16_t data);
+    uint16_t directWrite16(uint16_t data);
+    SPI_TypeDef *spi_get_id( PinName mosi, PinName miso, PinName sclk, PinName ssel);
+    SPI_TypeDef *spi;
+#if TODO
+    uint16_t directWrite(uint16_t data);
+    bool is16bit;
+#endif
+private:
+#if TODO
+    uint16_t (DirectSPI::*spiSend)(uint16_t data);
+    uint16_t spiSend8(uint16_t data);
+    uint16_t spiSend16(uint16_t data);
+#endif
+};
+