Tsungta Wu / Mbed OS mbed_SPIS_multiByte_example

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Diff: spi_api_multibyte.c

Revision:
3:f9aa81ae7c4c
Parent:
2:c520d7c7739d
Child:
4:8e796b751cd3
--- a/spi_api_multibyte.c	Wed May 31 09:30:53 2017 +0000
+++ b/spi_api_multibyte.c	Thu Jun 01 03:28:29 2017 +0000
@@ -82,9 +82,10 @@
 
 //    #define TEST_STRING "0123456789ABCDEFGHIJKLMNOPQRSTUVWXYZ"  //Tsungta, handle 32 bytes per SPI CS cycle
     #define TEST_STRING "012"  //Tsungta, handle 32 bytes per SPI CS cycle    
-    uint8_t       m_tx_buf[] = TEST_STRING;           /**< TX buffer. */
+    #define DATA_LENGTH 32
+    uint8_t       m_tx_buf[DATA_LENGTH];              /**< TX buffer. */
     uint8_t       m_rx_buf[sizeof(TEST_STRING)+1];    /**< RX buffer. */
-    const uint8_t m_length = sizeof(m_tx_buf);        /**< Transfer length. */
+    int m_length = sizeof(m_tx_buf);        /**< Transfer length. */
     int receive_bytes;
        
 static spi_info_t m_spi_info[SPI_COUNT];
@@ -495,8 +496,9 @@
     spi_info_t *p_spi_info = SPI_INFO(obj);
     MBED_ASSERT(!p_spi_info->master);
 
-//    m_tx_buf = value;//Need TO FIX
-//    m_length = bytes;//Need TO FIX
+    //m_tx_buf[] = &value;//Need TO FIX
+    memcpy(m_tx_buf, value, bytes);
+    m_length = bytes;//Need TO FIX
 }
 
 #if DEVICE_SPI_ASYNCH