1 files changed, 87 insertions, 0 deletions
diff --git a/src/sample/io_sample/SPI/Polling_fullduplex/spi_flash.c b/src/sample/io_sample/SPI/Polling_fullduplex/spi_flash.c
new file mode 100644
index 0000000..854a5f4
--- /dev/null
+++ b/src/sample/io_sample/SPI/Polling_fullduplex/spi_flash.c
@@ -0,0 +1,87 @@
+/**
+*********************************************************************************************************
+*               Copyright(c) 2018, Realtek Semiconductor Corporation. All rights reserved.
+*********************************************************************************************************
+* @file     spi_flash.c
+* @brief    This file provides demo code of adc continuous mode.
+* @details
+* @author   yuan
+* @date     2019-07-03
+* @version  v1.0
+*********************************************************************************************************
+*/
+
+/* Includes ------------------------------------------------------------------*/
+#include "spi_flash.h"
+#include "board.h"
+
+/**
+  * @brief  Read spi flash(gd25q128e) id.
+  * @param  Flash_ID_Type.
+  * @return void
+  */
+void spi_flash_read_id(Flash_ID_Type vFlashIdType, uint8_t *pFlashId)
+{
+    uint8_t send_buf[4] = {SPI_FLASH_JEDEC_ID, 0, 0, 0};
+    uint8_t recv_len = 3;
+
+    switch (vFlashIdType)
+    {
+    case DEVICE_ID:
+        send_buf[0] = SPI_FLASH_DEVICE_ID;
+        recv_len = 4 + 1;
+        break;
+    case MF_DEVICE_ID:
+        send_buf[0] = SPI_FLASH_MANU_ID;
+        recv_len = 5 + 1;
+        break;
+    case JEDEC_ID:
+        send_buf[0] = SPI_FLASH_JEDEC_ID;
+        recv_len = 3 + 1;
+        break;
+    default:
+        return;
+    }
+    *pFlashId++ = recv_len;
+
+    SPI_SendBuffer(FLASH_SPI, send_buf, recv_len);
+    while (recv_len--)
+    {
+        while (RESET == SPI_GetFlagState(FLASH_SPI, SPI_FLAG_RFNE));
+        *pFlashId++ = SPI_ReceiveData(FLASH_SPI);
+    }
+}
+
+void spi_flash_read(uint8_t vReadCmd, uint32_t vReadAddr, uint8_t *pBuffer, uint16_t vLength)
+{
+    uint8_t send_buf[10] = {0};
+    uint8_t send_len = 0;
+    uint16_t recv_len = 0;
+
+    if (SPI_FLASH_READ_DATA == vReadCmd)
+    {
+        send_len = 4;
+    }
+    else if (SPI_FLASH_FAST_READ == vReadCmd)
+    {
+        send_len = 5;
+    }
+    send_buf[0] = vReadCmd;
+    send_buf[1] = (vReadAddr >> 16) & 0xFF;
+    send_buf[2] = (vReadAddr >> 8) & 0xFF;
+    send_buf[3] = (vReadAddr) & 0xFF;
+
+    SPI_SendBuffer(FLASH_SPI, send_buf, send_len);
+    recv_len = vLength + send_len;
+    while (recv_len--)
+    {
+        SPI_SendBuffer(FLASH_SPI, &send_buf[9], 1);
+        while (SPI_GetFlagState(FLASH_SPI, SPI_FLAG_RFNE) == RESET);
+        *pBuffer++ = SPI_ReceiveData(FLASH_SPI);
+    }
+    SPI_SetReadLen(FLASH_SPI, 1);
+}
+
+
+
+