Diff: src/mbed/admw_spi.cpp

Revision:

13:97cb32670539

Parent:

5:0728bde67bdb

Child:

23:bb685f35b08b

--- a/src/mbed/admw_spi.cpp	Wed Jul 24 08:51:31 2019 +0000
+++ b/src/mbed/admw_spi.cpp	Thu Jul 25 06:38:45 2019 +0000
@@ -96,6 +96,45 @@
 /*
  * Execute a bi-directional data transfer on the SPI interface
  */
+ ADMW_RESULT
+admw_SpiReceive(
+    ADMW_SPI_HANDLE hDevice,
+    void *pTxData,
+    void *pRxData,
+    unsigned nLength,
+    bool bCsHold)
+{
+   SpiContext_t *pCtx = (SpiContext_t*)hDevice;
+  
+   pCtx->_spi->format(ADMW_SPI_FRAME_SIZE, 1);
+   
+   int rc = 0;
+    
+    *(pCtx->_wakeup) = 0;
+
+    wait_us(60);
+
+    *(pCtx->_cs) = 0;
+
+    rc  = pCtx->_spi->write((char*)(pTxData), pTxData ? nLength : 0,
+                     (char*)(pRxData), pRxData ? nLength : 0);
+    
+    if ((rc < 0) || !bCsHold)
+        *(pCtx->_cs) = 1;
+
+    *(pCtx->_wakeup) = 1;
+
+    if (rc < 0)
+    {
+        ADMW_LOG_ERROR("Failed to complete SPI transfer");
+        return ADMW_FAILURE;
+    }
+
+    pCtx->_spi->format(ADMW_SPI_FRAME_SIZE, ADMW_SPI_MODE);
+    
+    return ADMW_SUCCESS;
+    
+}
 ADMW_RESULT
 admw_SpiTransfer(
     ADMW_SPI_HANDLE hDevice,