1 files changed, 117 insertions, 0 deletions
diff --git a/examples/imx7_colibri_m4/driver_examples/uart_imx/uart_polling/main.c b/examples/imx7_colibri_m4/driver_examples/uart_imx/uart_polling/main.c
new file mode 100644
index 0000000..5888f6f
--- /dev/null
+++ b/examples/imx7_colibri_m4/driver_examples/uart_imx/uart_polling/main.c
@@ -0,0 +1,117 @@
+/*
+ * Copyright (c) 2015, Freescale Semiconductor, Inc.
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without modification,
+ * are permitted provided that the following conditions are met:
+ *
+ * o Redistributions of source code must retain the above copyright notice, this list
+ *   of conditions and the following disclaimer.
+ *
+ * o 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.
+ *
+ * o Neither the name of Freescale Semiconductor, Inc. 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 HOLDER 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.
+ */
+
+///////////////////////////////////////////////////////////////////////////////
+//  Includes
+///////////////////////////////////////////////////////////////////////////////
+#include <stdint.h>
+#include <stdbool.h>
+#include "uart_imx.h"
+#include "board.h"
+
+///////////////////////////////////////////////////////////////////////////////
+//  Consts
+///////////////////////////////////////////////////////////////////////////////
+const uint8_t bufferData1[] = "\n\r++++++++++++++++ UART Send/Receive Polling Example +++++++++++++++++\n\r";
+const uint8_t bufferData2[] = "\n\rType characters from keyboard, the board will receive and then echo them to terminal screen\n\r";
+
+static void UART_SendDataPolling(UART_Type *base, const uint8_t *txBuff, uint32_t txSize);
+static void UART_ReceiveDataPolling(UART_Type *base, uint8_t *rxBuff, uint32_t rxSize);
+
+int main(void)
+{
+    // Setup UART init structure.
+    uart_init_config_t initConfig = {
+        .baudRate   = 115200u,
+        .wordLength = uartWordLength8Bits,
+        .stopBitNum = uartStopBitNumOne,
+        .parity     = uartParityDisable,
+        .direction  = uartDirectionTxRx
+    };
+    uint8_t rxChar = 0;
+    uint32_t byteCount = 0;
+
+    /* Initialize board specified hardware. */
+    hardware_init();
+
+    // Get current module clock frequency.
+    initConfig.clockRate  = get_uart_clock_freq(BOARD_DEBUG_UART_BASEADDR);
+
+    /* Initialize UART baud rate, bit count, parity, stop bit and direction. */
+    UART_Init(BOARD_DEBUG_UART_BASEADDR, &initConfig);
+
+    /* Set UART build-in hardware FIFO Watermark. */
+    UART_SetTxFifoWatermark(BOARD_DEBUG_UART_BASEADDR, 16);
+    UART_SetRxFifoWatermark(BOARD_DEBUG_UART_BASEADDR, 1);
+
+    /* Finally, enable the UART module */
+    UART_Enable(BOARD_DEBUG_UART_BASEADDR);
+
+    byteCount = sizeof(bufferData1);
+    UART_SendDataPolling(BOARD_DEBUG_UART_BASEADDR, bufferData1, byteCount);
+
+    byteCount = sizeof(bufferData2);
+    UART_SendDataPolling(BOARD_DEBUG_UART_BASEADDR, bufferData2, byteCount);
+
+    while (true)
+    {
+        /* Wait to receive input data */
+        UART_ReceiveDataPolling(BOARD_DEBUG_UART_BASEADDR, &rxChar, 1u);
+
+        /* Send any character that received */
+        UART_SendDataPolling(BOARD_DEBUG_UART_BASEADDR, &rxChar, 1u);
+    }
+}
+
+static void UART_SendDataPolling(UART_Type *base, const uint8_t *txBuff, uint32_t txSize)
+{
+    while (txSize--)
+    {
+        while (!UART_GetStatusFlag(base, uartStatusTxComplete));
+        UART_Putchar(base, *txBuff++);
+    }
+}
+
+static void UART_ReceiveDataPolling(UART_Type *base, uint8_t *rxBuff, uint32_t rxSize)
+{
+    while (rxSize--)
+    {
+        while (!UART_GetStatusFlag(base, uartStatusRxReady));
+        *rxBuff = UART_Getchar(base);
+        rxBuff++;
+
+        if (UART_GetStatusFlag(base, uartStatusRxOverrun))
+            UART_ClearStatusFlag(base, uartStatusRxOverrun);
+    }
+}
+
+/*******************************************************************************
+ * EOF
+ ******************************************************************************/