Diff: es_wifi_io.c

Revision:

0:c61a93635433

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/es_wifi_io.c	Thu Aug 17 15:26:02 2017 +0000
@@ -0,0 +1,331 @@
+/**
+  ******************************************************************************
+  * @file    es_wifi_io.c
+  * @author  MCD Application Team
+  * @version V1.8.0
+  * @date    21-April-2017
+  * @brief   This file implments the IO operations to deal with the es-wifi
+  *          module. It mainly Inits and Deinits the SPI interface. Send and
+  *          receive data over it.
+  ******************************************************************************
+  * @attention
+  *
+  * <h2><center>&copy; Copyright (c) 2017 STMicroelectronics International N.V. 
+  * All rights reserved.</center></h2>
+  *
+  * Redistribution and use in source and binary forms, with or without 
+  * modification, are permitted, provided that the following conditions are met:
+  *
+  * 1. Redistribution of source code must retain the above copyright notice, 
+  *    this list of conditions and the following disclaimer.
+  * 2. 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.
+  * 3. Neither the name of STMicroelectronics nor the names of other 
+  *    contributors to this software may be used to endorse or promote products 
+  *    derived from this software without specific written permission.
+  * 4. This software, including modifications and/or derivative works of this 
+  *    software, must execute solely and exclusively on microcontroller or
+  *    microprocessor devices manufactured by or for STMicroelectronics.
+  * 5. Redistribution and use of this software other than as permitted under 
+  *    this license is void and will automatically terminate your rights under 
+  *    this license. 
+  *
+  * THIS SOFTWARE IS PROVIDED BY STMICROELECTRONICS AND CONTRIBUTORS "AS IS" 
+  * AND ANY EXPRESS, IMPLIED OR STATUTORY WARRANTIES, INCLUDING, BUT NOT 
+  * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY, FITNESS FOR A 
+  * PARTICULAR PURPOSE AND NON-INFRINGEMENT OF THIRD PARTY INTELLECTUAL PROPERTY
+  * RIGHTS ARE DISCLAIMED TO THE FULLEST EXTENT PERMITTED BY LAW. IN NO EVENT 
+  * SHALL STMICROELECTRONICS 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 "es_wifi_io.h"
+#include <string.h>
+
+/* Private define ------------------------------------------------------------*/
+#define MIN(a, b)  ((a) < (b) ? (a) : (b))
+/* Private typedef -----------------------------------------------------------*/
+/* Private macro -------------------------------------------------------------*/
+/* Private variables ---------------------------------------------------------*/
+SPI_HandleTypeDef hspi;
+
+/* Private function prototypes -----------------------------------------------*/
+
+/* Private functions ---------------------------------------------------------*/
+/*******************************************************************************
+                       COM Driver Interface (SPI)
+*******************************************************************************/
+/**
+  * @brief  Initialize SPI MSP
+  * @param  hspi: SPI handle
+  * @retval None
+  */
+void SPI_WIFI_MspInit(SPI_HandleTypeDef* hspi)
+{
+  
+  GPIO_InitTypeDef GPIO_Init;
+  
+  __HAL_RCC_SPI3_CLK_ENABLE();
+  __HAL_RCC_GPIOB_CLK_ENABLE();
+  __HAL_RCC_GPIOC_CLK_ENABLE();
+  __HAL_RCC_GPIOE_CLK_ENABLE();
+  
+  /* configure Wake up pin */
+  HAL_GPIO_WritePin(GPIOB, GPIO_PIN_13, GPIO_PIN_RESET ); 
+  GPIO_Init.Pin       = GPIO_PIN_13;
+  GPIO_Init.Mode      = GPIO_MODE_OUTPUT_PP;
+  GPIO_Init.Pull      = GPIO_NOPULL;
+  GPIO_Init.Speed     = GPIO_SPEED_FREQ_LOW;
+  HAL_GPIO_Init(GPIOB, &GPIO_Init );
+
+  /* configure Data ready pin */
+  GPIO_Init.Pin       = GPIO_PIN_1;
+  GPIO_Init.Mode      = GPIO_MODE_IT_RISING;
+  GPIO_Init.Pull      = GPIO_NOPULL;
+  GPIO_Init.Speed     = GPIO_SPEED_FREQ_LOW;
+  HAL_GPIO_Init(GPIOE, &GPIO_Init );
+
+  /* configure Reset pin */
+  GPIO_Init.Pin       = GPIO_PIN_8;
+  GPIO_Init.Mode      = GPIO_MODE_OUTPUT_PP;
+  GPIO_Init.Pull      = GPIO_NOPULL;
+  GPIO_Init.Speed     = GPIO_SPEED_FREQ_LOW;
+  GPIO_Init.Alternate = 0;
+  HAL_GPIO_Init(GPIOE, &GPIO_Init );
+  
+  /* configure SPI NSS pin pin */
+  HAL_GPIO_WritePin( GPIOE, GPIO_PIN_0, GPIO_PIN_SET ); 
+  GPIO_Init.Pin       = GPIO_PIN_0;
+  GPIO_Init.Mode      = GPIO_MODE_OUTPUT_PP;
+  GPIO_Init.Pull      = GPIO_NOPULL;
+  GPIO_Init.Speed     = GPIO_SPEED_FREQ_MEDIUM;
+  HAL_GPIO_Init( GPIOE, &GPIO_Init );
+  
+  /* configure SPI CLK pin */
+  GPIO_Init.Pin       = GPIO_PIN_10;
+  GPIO_Init.Mode      = GPIO_MODE_AF_PP;
+  GPIO_Init.Pull      = GPIO_NOPULL;
+  GPIO_Init.Speed     = GPIO_SPEED_FREQ_MEDIUM;
+  GPIO_Init.Alternate = GPIO_AF6_SPI3;
+  HAL_GPIO_Init( GPIOC, &GPIO_Init );
+  
+  /* configure SPI MOSI pin */
+  GPIO_Init.Pin       = GPIO_PIN_12;
+  GPIO_Init.Mode      = GPIO_MODE_AF_PP;
+  GPIO_Init.Pull      = GPIO_NOPULL;
+  GPIO_Init.Speed     = GPIO_SPEED_FREQ_MEDIUM;
+  GPIO_Init.Alternate = GPIO_AF6_SPI3;
+  HAL_GPIO_Init( GPIOC, &GPIO_Init );
+  
+  /* configure SPI MISO pin */
+  GPIO_Init.Pin       = GPIO_PIN_11;
+  GPIO_Init.Mode      = GPIO_MODE_AF_PP;
+  GPIO_Init.Pull      = GPIO_PULLUP;
+  GPIO_Init.Speed     = GPIO_SPEED_FREQ_MEDIUM;
+  GPIO_Init.Alternate = GPIO_AF6_SPI3;
+  HAL_GPIO_Init( GPIOC, &GPIO_Init );
+}
+
+/**
+  * @brief  Initialize the SPI3
+  * @param  None
+  * @retval None
+  */
+int8_t SPI_WIFI_Init(void)
+{
+  uint32_t tickstart = HAL_GetTick();
+  uint8_t Prompt[6];
+  uint8_t count = 0;
+  HAL_StatusTypeDef  Status;
+  
+  hspi.Instance               = SPI3;
+  SPI_WIFI_MspInit(&hspi);
+  
+  hspi.Init.Mode              = SPI_MODE_MASTER;
+  hspi.Init.Direction         = SPI_DIRECTION_2LINES;
+  hspi.Init.DataSize          = SPI_DATASIZE_16BIT;
+  hspi.Init.CLKPolarity       = SPI_POLARITY_LOW;
+  hspi.Init.CLKPhase          = SPI_PHASE_1EDGE;
+  hspi.Init.NSS               = SPI_NSS_SOFT;
+  hspi.Init.BaudRatePrescaler = SPI_BAUDRATEPRESCALER_8;  /* 80/8= 10MHz (Inventek WIFI module supportes up to 20MHz)*/
+  hspi.Init.FirstBit          = SPI_FIRSTBIT_MSB;
+  hspi.Init.TIMode            = SPI_TIMODE_DISABLE;
+  hspi.Init.CRCCalculation    = SPI_CRCCALCULATION_DISABLE;
+  hspi.Init.CRCPolynomial     = 0;
+  
+  if(HAL_SPI_Init( &hspi ) != HAL_OK)
+  {
+    return -1;
+  }
+  
+  WIFI_RESET_MODULE();
+  
+  WIFI_ENABLE_NSS(); 
+  
+  while (WIFI_IS_CMDDATA_READY())
+  {
+    Status = HAL_SPI_Receive(&hspi , &Prompt[count], 1, 0xFFFF);  
+    count += 2;
+    if(((HAL_GetTick() - tickstart ) > 0xFFFF) || (Status != HAL_OK))
+    {
+      WIFI_DISABLE_NSS(); 
+      return -1;
+    }    
+  }
+  
+  if((Prompt[0] != 0x15) ||(Prompt[1] != 0x15) ||(Prompt[2] != '\r')||
+       (Prompt[3] != '\n') ||(Prompt[4] != '>') ||(Prompt[5] != ' '))
+  {
+    WIFI_DISABLE_NSS(); 
+    return -1;
+  }    
+   
+  WIFI_DISABLE_NSS(); 
+  return 0;
+}
+
+/**
+  * @brief  DeInitialize the SPI
+  * @param  None
+  * @retval None
+  */
+int8_t SPI_WIFI_DeInit(void)
+{
+  HAL_SPI_DeInit( &hspi );
+  return 0;
+}
+
+/**
+  * @brief  Receive wifi Data from SPI
+  * @param  pdata : pointer to data
+  * @param  len : Data length
+  * @param  timeout : send timeout in mS
+  * @retval Length of received data (payload)
+  */
+int16_t SPI_WIFI_ReceiveData(uint8_t *pData, uint16_t len, uint32_t timeout)
+{
+  uint32_t tickstart = HAL_GetTick();
+  int16_t length = 0;
+  uint8_t tmp[2];
+  
+  HAL_SPIEx_FlushRxFifo(&hspi);
+  
+  WIFI_DISABLE_NSS(); 
+  
+  while (!WIFI_IS_CMDDATA_READY())
+  {
+    if((HAL_GetTick() - tickstart ) > timeout)
+    {
+      return -1;
+    }
+  }
+  
+  WIFI_ENABLE_NSS(); 
+  
+  while (WIFI_IS_CMDDATA_READY())
+  {
+    if((length < len) || (!len))
+    {
+      HAL_SPI_Receive(&hspi, tmp, 1, timeout) ;    
+      /* let some time to hardware to change CMDDATA signal */
+      if(tmp[1] == 0x15)
+      {
+       SPI_WIFI_Delay(1);
+      }
+      /*This the last data */
+      if(!WIFI_IS_CMDDATA_READY())
+      {
+        if(tmp[1] == 0x15)
+        {
+          pData[0] = tmp[0];
+          length++;
+          break;
+        }     
+      }
+      
+      pData[0] = tmp[0];
+      pData[1] = tmp[1];
+      length += 2;
+      pData  += 2;
+      
+      if((HAL_GetTick() - tickstart ) > timeout)
+      {
+        WIFI_DISABLE_NSS(); 
+        return -1;
+      }
+    }
+    else
+    {
+      break;
+    }
+  }
+  
+  WIFI_DISABLE_NSS(); 
+  return length;
+}
+/**
+  * @brief  Send wifi Data thru SPI
+  * @param  pdata : pointer to data
+  * @param  len : Data length
+  * @param  timeout : send timeout in mS
+  * @retval Length of sent data
+  */
+int16_t SPI_WIFI_SendData( uint8_t *pdata,  uint16_t len, uint32_t timeout)
+{
+  uint32_t tickstart = HAL_GetTick();
+  uint8_t Padding[2];
+  
+  while (!WIFI_IS_CMDDATA_READY())
+  {
+    if((HAL_GetTick() - tickstart ) > timeout)
+    {
+      WIFI_DISABLE_NSS();       
+      return -1;
+    }
+  }
+  
+  WIFI_ENABLE_NSS(); 
+  if (len > 1)
+  {
+   if( HAL_SPI_Transmit(&hspi, (uint8_t *)pdata , len/2, timeout) != HAL_OK)
+   {
+     WIFI_DISABLE_NSS(); 
+     return -1;
+   }
+  }
+  
+  if ( len & 1)
+  {
+    Padding[0] = pdata[len-1];
+    Padding[1] = '\n';
+    
+    if( HAL_SPI_Transmit(&hspi, Padding, 1, timeout) != HAL_OK)
+    {
+      WIFI_DISABLE_NSS();       
+      return -1;
+    }
+  }
+  
+  return len;
+}
+
+/**
+  * @brief  Delay
+  * @param  Delay in ms
+  * @retval None
+  */
+void SPI_WIFI_Delay(uint32_t Delay)
+{
+  HAL_Delay(Delay);
+}
+
+/************************ (C) COPYRIGHT STMicroelectronics *****END OF FILE****/