1 files changed, 175 insertions, 0 deletions
diff --git a/examples/imx7d_val_m4/driver_examples/ecspi/ecspi_interrupt/slave/main.c b/examples/imx7d_val_m4/driver_examples/ecspi/ecspi_interrupt/slave/main.c
new file mode 100644
index 0000000..d81a3c4
--- /dev/null
+++ b/examples/imx7d_val_m4/driver_examples/ecspi/ecspi_interrupt/slave/main.c
@@ -0,0 +1,175 @@
+/*
+ * 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.
+ */
+
+#include <stdio.h>
+#include "board.h"
+#include "uart_imx.h"
+#include "debug_console_imx.h"
+#include "ecspi.h"
+
+/* define ECSPI slave mode burst length */
+#define ECSPI_SLAVE_BURSTLENGTH            (7)
+#define FIRST_DATA                         0xFF
+
+/* ECSPI module slave mode configure */
+static void ECSPI_SlaveConfig(ecspi_init_t* initConfig);
+/* ECSPI slave mode transfer Status */
+static bool ECSPI_SlaveGetTransferStatus(void);
+
+static volatile uint8_t txData;
+static volatile uint8_t rxData;
+static uint8_t txBuffer[20];
+static uint8_t rxBuffer[20];
+static volatile bool isBusy;
+
+int main(void)
+{
+    uint8_t i;
+
+    ecspi_init_t ecspiSlaveInitConfig = {
+        .clockRate = 0,
+        .baudRate = 0,
+        .mode = ecspiSlaveMode,
+        .burstLength = ECSPI_SLAVE_BURSTLENGTH,
+        .channelSelect = BOARD_ECSPI_SLAVE_CHANNEL,
+        .clockPhase = ecspiClockPhaseSecondEdge,
+        .clockPolarity = ecspiClockPolarityActiveHigh,
+        .ecspiAutoStart = 0
+    };
+
+    /* Hardware initialiize, include RDC, CLOCK, IOMUX, ENABLE MODULE */
+    hardware_init();
+
+    PRINTF("\n-------------- ECSPI slave driver example --------------\n\n\r");
+    PRINTF("This example application demonstrates usage of ECSPI slave driver.\n\r");
+    PRINTF("It responding to master via SPI bus.\n\n\r");
+
+    /* Ecspi slave initialize, include configure parameters */
+    txData = FIRST_DATA;
+    ECSPI_SlaveConfig(&ecspiSlaveInitConfig);
+
+    PRINTF("SLAVE: Initial transmit data: %d\n\n\r", txData);
+
+    /* Send data to master and receive data from master */
+    txData = 0;
+    for(i = 0; i < 20; i++)
+    {
+        /* Wait for transfer */
+        while(ECSPI_SlaveGetTransferStatus());
+        txBuffer[i] = txData;
+        rxBuffer[i] = rxData;
+        txData = txData + 1;
+        /* Set transfer status */
+        isBusy = true;
+    }
+
+    for(i = 0; i < 20; i++)
+    {
+        PRINTF("SLAVE: Next step transmit data: %d\n\r", txBuffer[i]);
+        PRINTF("     : Currently received data: %d\n\n\r", rxBuffer[i]);
+    }
+
+    /* Disable ecspi slave module */
+    ECSPI_Disable(BOARD_ECSPI_SLAVE_BASEADDR);
+    while(1);
+}
+
+/******************************************************************************
+*
+* Function Name: ECSPI_SlaveGetTransferStatus
+* Comments: Get Slave transfer status.
+* 
+******************************************************************************/
+static bool ECSPI_SlaveGetTransferStatus(void)
+{
+    return isBusy;
+}
+
+/******************************************************************************
+*
+* Function Name: ECSPI_SlaveConfig
+* Comments: ECSPI slave initialize
+* 
+******************************************************************************/
+static void ECSPI_SlaveConfig(ecspi_init_t* initConfig)
+{
+    /* Initialize ECSPI, parameter configure */
+    ECSPI_Init(BOARD_ECSPI_SLAVE_BASEADDR, initConfig);
+
+    /* Move first data to tx data register to be ready for first transmition. */
+    ECSPI_SendData(BOARD_ECSPI_SLAVE_BASEADDR, txData);
+
+    /* Call core API to enable the IRQ. */
+    NVIC_EnableIRQ(BOARD_ECSPI_SLAVE_IRQ_NUM);
+
+    /* Clear ECSPI status register */
+    ECSPI_ClearStatusFlag(BOARD_ECSPI_SLAVE_BASEADDR, ecspiFlagTxfifoTc);
+    ECSPI_ClearStatusFlag(BOARD_ECSPI_SLAVE_BASEADDR, ecspiFlagRxfifoOverflow);
+
+    /* Enable RXFIFO Ready Interrupt.*/
+    ECSPI_SetIntCmd(BOARD_ECSPI_SLAVE_BASEADDR, ecspiFlagRxfifoReady, true);
+
+    /* Set ECSPI transfer state. */
+    isBusy = true;
+}
+
+/******************************************************************************
+*
+* Function Name    : BOARD_ECSPI_SLAVE_HANDLER
+* Returned Value   : none
+* Comments         : 
+*    ECSPI slave IRQ handler.
+*    Copy txData to tx data register (will be send in next step) and received
+*    data to rxData. 
+* 
+******************************************************************************/
+void BOARD_ECSPI_SLAVE_HANDLER(void)
+{
+    /* Are one word or more in RX FIFO */
+    if(ECSPI_GetStatusFlag(BOARD_ECSPI_SLAVE_BASEADDR, ecspiFlagRxfifoReady) != 0)
+    {
+        /* Read byte from rx data register */
+        rxData = ECSPI_ReceiveData(BOARD_ECSPI_SLAVE_BASEADDR);
+
+        /* Store tx data to tx data register for next transmition */
+        ECSPI_SendData(BOARD_ECSPI_SLAVE_BASEADDR, txData);
+
+        /* Clear the status */
+        ECSPI_ClearStatusFlag(BOARD_ECSPI_SLAVE_BASEADDR, ecspiFlagTxfifoTc);
+        ECSPI_ClearStatusFlag(BOARD_ECSPI_SLAVE_BASEADDR, ecspiFlagRxfifoOverflow);
+
+        /* Set transfer status */
+        isBusy = false;
+    }
+}
+
+/*******************************************************************************
+ * EOF
+ ******************************************************************************/