Diff: simplelink/cc3100_spi.cpp

Revision:

0:e89ba455dbcf

Child:

7:0687d16b9781

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/simplelink/cc3100_spi.cpp	Tue Feb 10 12:09:29 2015 +0000
@@ -0,0 +1,202 @@
+/*
+ * spi.cpp mbed
+ *
+ * Copyright (C) 2014 Texas Instruments Incorporated - http://www.ti.com/
+ *
+ *
+ *  Redistribution and use in source and binary forms, with or without
+ *  modification, are permitted provided that the following conditions
+ *  are met:
+ *
+ *    Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ *
+ *    Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the
+ *    distribution.
+ *
+ *    Neither the name of Texas Instruments Incorporated nor the names of
+ *    its contributors may be used to endorse or promote products derived
+ *    from this software without specific prior written permission.
+ *
+ *  THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ *  "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ *  LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+ *  A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+ *  OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ *  SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+ *  LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+ *  DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+ *  THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ *  (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+ *  OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ *
+*/
+
+#include "cc3100_simplelink.h"
+#include "cc3100_spi.h"
+
+
+namespace mbed_cc3100 {
+
+P_EVENT_HANDLER   pIraEventHandler = 0;
+uint8_t           IntIsMasked;
+
+cc3100_spi::cc3100_spi(PinName cc3100_irq, PinName cc3100_nHIB, PinName cc3100_cs, SPI cc3100_spi, cc3100_driver &driver)
+    : _wlan_irq(cc3100_irq), _wlan_nHIB(cc3100_nHIB), _wlan_cs(cc3100_cs), _wlan_spi(cc3100_spi), _driver(driver)
+{
+
+    _wlan_spi.format(8,1);
+    _wlan_spi.frequency(16000000);
+    _wlan_irq.rise(this, &cc3100_spi::IntSpiGPIOHandler);      //_SlDrvRxIrqHandler is triggered after IntSpiGPIOHandler
+    _wlan_nHIB = 0;
+    _wlan_cs = 1;
+    wait_ms(200);
+    
+    
+}
+
+cc3100_spi::~cc3100_spi()
+{
+
+}
+
+int cc3100_spi::spi_Close(Fd_t fd)
+{
+    // Disable WLAN Interrupt ...
+    cc3100_InterruptDisable();
+
+    return NONOS_RET_OK;
+}
+
+void cc3100_spi::cc3100_InterruptEnable()
+{
+    __enable_irq();
+}
+
+void cc3100_spi::cc3100_InterruptDisable()
+{
+    __disable_irq();
+}
+
+void cc3100_spi::CC3100_disable()
+{
+    _wlan_nHIB = 0;
+}
+
+void cc3100_spi::CC3100_enable()
+{
+    
+    _wlan_nHIB = 1;
+}
+
+Fd_t cc3100_spi::spi_Open(int8_t *ifName, uint32_t flags)
+{
+
+    // 50 ms delay
+    wait_ms(50);
+
+    // Enable WLAN interrupt
+    cc3100_InterruptEnable();
+
+    return NONOS_RET_OK;
+}
+
+int cc3100_spi::spi_Write(Fd_t fd, uint8_t *pBuff, int len)
+{
+
+    int len_to_return = len;
+
+    _wlan_cs = 0;
+
+    while(len) {
+        _wlan_spi.write(*pBuff++);
+        len--;
+    }
+
+    _wlan_cs = 1;
+
+    return len_to_return;
+}
+
+int cc3100_spi::spi_Read(Fd_t fd, uint8_t *pBuff, int len)
+{
+    int i = 0;
+
+    _wlan_cs = 0;
+
+    for (i = 0; i < len; i++) {
+        pBuff[i] = _wlan_spi.write(0xFF);
+    }
+
+    _wlan_cs = 1;
+    
+    return len;
+}
+
+void cc3100_spi::IntSpiGPIOHandler(void)
+{
+    
+    if(_wlan_irq){
+        _driver._SlDrvRxIrqHandler(0);
+    }
+}
+
+/*!
+    \brief register an interrupt handler for the host IRQ
+
+    \param[in]      InterruptHdl    -    pointer to interrupt handler function
+
+    \param[in]      pValue          -    pointer to a memory strcuture that is
+                    passed to the interrupt handler.
+
+    \return         upon successful registration, the function shall return 0.
+                    Otherwise, -1 shall be returned
+
+    \sa
+    \note           If there is already registered interrupt handler, the
+                    function should overwrite the old handler with the new one
+    \warning
+*/
+int cc3100_spi::registerInterruptHandler(P_EVENT_HANDLER InterruptHdl , void* pValue)
+{
+
+    pIraEventHandler = InterruptHdl;
+    return 0;
+}
+
+/*!
+    \brief     Unmasks the Host IRQ
+
+    \param[in]      none
+
+    \return         none
+
+    \warning
+*/
+void cc3100_spi::UnMaskIntHdlr()
+{
+    IntIsMasked = FALSE;
+}
+
+/*!
+    \brief      Masks the Host IRQ
+
+    \param[in]      none
+
+    \return         none
+
+    \warning
+*/
+void cc3100_spi::MaskIntHdlr()
+{
+    IntIsMasked = TRUE;
+}
+
+}//namespace mbed_cc3100
+
+
+
+
+