Diff: Spwf/wifi_driver.c

Revision:

1:bd9db471d47d

Parent:

0:dc55f40eb04f

Child:

6:e7a3fca2df10

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/Spwf/wifi_driver.c	Thu Apr 14 06:14:14 2016 +0000
@@ -0,0 +1,187 @@
+/**
+ ******************************************************************************
+ * @file    wifi_driver.c
+ * @author  Central LAB
+ * @version V2.0.0
+ * @date    01-March-2016
+ * @brief   Enable Wi-Fi functionality using AT cmd set
+ ******************************************************************************
+ * @attention
+ *
+ * <h2><center>&copy; COPYRIGHT(c) 2015 STMicroelectronics</center></h2>
+ *
+ * Redistribution and use in source and binary forms, with or without modification,
+ * are permitted provided that the following conditions are met:
+ *   1. Redistributions 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 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 <stddef.h>
+#include "wifi_module.h"
+#include "ring_buffer.h"
+#include "device.h"
+#include "wait_api.h"
+#include "stdio.h"
+#include "string.h"
+#include "wifi_driver.h"
+
+void Wifi_ticker(void)
+{
+  Wifi_SysTick_Isr();
+}
+
+void Wifi_scheduler(void)
+{ 
+  Wifi_TIM_Handler();
+}
+
+void Rx_irq_handler(void)
+{
+
+          uint8_t data_byte = (uint8_t)callSpwfSADevice_getChar(spwf_dev);
+
+          status_flag.Uartx_Rx_Processing = WIFI_FALSE;
+          
+          Stop_Timer();
+          __disable_irq();
+          push_buffer(&big_buff, &data_byte);
+          __enable_irq();
+          Start_Timer();
+          
+          status_flag.Uartx_Rx_Processing = WIFI_TRUE;
+          
+          /*if(is_half_full(&big_buff))
+          {
+            status_flag.resume_receive_data = WIFI_TRUE;
+            if(callSpwfSADevice_read_rts(spwf_dev))
+            callSpwfSADevice_rts(spwf_dev, GPIO_PIN_SET);
+            //callSpwfSADevice_attach(0);
+          } else
+            {
+              if(status_flag.AT_Cmd_Processing == WIFI_FALSE)
+              {
+                status_flag.Uartx_Rx_Processing = WIFI_TRUE;
+              }  
+            }*/
+} 
+
+
+/**
+* @brief  wifi_reset
+*         Reset WiFi module using PC12 gpio pin
+* @param  None
+* @retval None
+*/
+void wifi_reset(void)
+{  
+  WiFi_Module_State = Process_Event; 
+  WiFi_WIND_State.WiFiHWStarted = WIFI_FALSE;
+  wifi_connected = 0; //reset wifi_connected to get user callback
+  memset((void*)&WiFi_WIND_State,0x00,sizeof(WiFi_WIND_State)); /*reset the WIND State?*/
+
+  /* ===   RESET PIN - PC12   ===*/
+  
+  callSpwfSADevice_reset(spwf_dev, 0); 
+  wait_ms(200);
+
+  callSpwfSADevice_reset(spwf_dev, 1); 
+  wait_ms(100);
+  
+  while(WiFi_WIND_State.WiFiHWStarted != WIFI_TRUE) 
+  {
+        //nothing to do
+        __NOP();
+  }
+}
+
+
+/**
+* @brief  PowerUp_WiFi_Module
+*         Power up Wi-Fi module,SET GPIO PA0 pin 
+* @param  None
+* @retval None
+*/
+void PowerUp_WiFi_Module(void)
+{
+  /* ===   SET PIN - PC12   ===*/
+  callSpwfSADevice_reset(spwf_dev, 1); 
+  wait_ms(50);
+}
+
+/**
+* @brief  Receive_Data
+*         Receive data from UART port
+* @param  uint8_t number of bytes to be received
+* @retval None
+*/
+void Receive_Data(void)
+{
+  callSpwfSADevice_rts(spwf_dev, 0);
+}
+
+
+/**
+* @brief  USART_Transmit_AT_Cmd
+*         send AT cmd on UART port of wifi module.
+* @param  size size of the AT command
+* @retval WiFi_Status_t : status of AT cmd
+*/
+WiFi_Status_t USART_Transmit_AT_Cmd(uint16_t size)
+{
+  //Check for Hardware Started
+  if(status_flag.WiFi_Enabled == WIFI_FALSE) 
+    return WiFi_NOT_READY;
+  //Check for Deep-Sleep or Standby Mode, return error if true
+  if (status_flag.Standby_Enabled == WIFI_TRUE || status_flag.Deep_Sleep_Enabled == WIFI_TRUE)
+    return WiFi_IN_LOW_POWER_ERROR;
+
+  status_flag.AT_Cmd_Processing = WIFI_TRUE;//Stop Any Rx between the TX call
+
+  if (size == 0)
+    {
+        return WiFi_UNHANDLED_IND_ERROR;
+    }
+
+#if defined(USART3_INT_MODE)
+  if(HAL_UART_Transmit_IT(&UartWiFiHandle, (uint8_t *)WiFi_AT_Cmd_Buff, size)!= HAL_OK)
+  {
+    Error_Handler();
+    return WiFi_HAL_UART_ERROR;
+  }
+  while (UartReady != SET);
+  UartReady = RESET; 
+
+#elif defined(USART3_POLLING_MODE)
+
+  callSpwfSADevice_write(spwf_dev, (const char *) WiFi_AT_Cmd_Buff, size);
+
+#else
+ #error "Please select USART mode in your application (in wifi_module.h file)"
+#endif
+ 
+  status_flag.AT_Cmd_Processing = WIFI_FALSE;//Re-enable Rx for UART
+  if(status_flag.Uartx_Rx_Processing == WIFI_FALSE)
+    Receive_Data();//Start receiving Rx from the UART again, if and only if it was stopped in the previous Uartx_Rx_Handler
+  return WiFi_MODULE_SUCCESS;
+}
+