Andrew Miller / X_NUCLEO_IDW01M1

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Spwf/wifi_driver.c@6:e7a3fca2df10, 2016-05-09 (annotated)

Committer:
mridup
Date:
Mon May 09 10:38:22 2016 +0000
Revision:
6:e7a3fca2df10
Parent:
1:bd9db471d47d
Child:
8:0f302a13e21b
Socket Server support.

Who changed what in which revision?

UserRevisionLine numberNew contents of line
mridup 0:dc55f40eb04f 1 /**
mridup 0:dc55f40eb04f 2 ******************************************************************************
mridup 0:dc55f40eb04f 3 * @file wifi_driver.c
mridup 0:dc55f40eb04f 4 * @author Central LAB
mridup 0:dc55f40eb04f 5 * @version V2.0.0
mridup 0:dc55f40eb04f 6 * @date 01-March-2016
mridup 0:dc55f40eb04f 7 * @brief Enable Wi-Fi functionality using AT cmd set
mridup 0:dc55f40eb04f 8 ******************************************************************************
mridup 0:dc55f40eb04f 9 * @attention
mridup 0:dc55f40eb04f 10 *
mridup 0:dc55f40eb04f 11 * <h2><center>&copy; COPYRIGHT(c) 2015 STMicroelectronics</center></h2>
mridup 0:dc55f40eb04f 12 *
mridup 0:dc55f40eb04f 13 * Redistribution and use in source and binary forms, with or without modification,
mridup 0:dc55f40eb04f 14 * are permitted provided that the following conditions are met:
mridup 0:dc55f40eb04f 15 * 1. Redistributions of source code must retain the above copyright notice,
mridup 0:dc55f40eb04f 16 * this list of conditions and the following disclaimer.
mridup 0:dc55f40eb04f 17 * 2. Redistributions in binary form must reproduce the above copyright notice,
mridup 0:dc55f40eb04f 18 * this list of conditions and the following disclaimer in the documentation
mridup 0:dc55f40eb04f 19 * and/or other materials provided with the distribution.
mridup 0:dc55f40eb04f 20 * 3. Neither the name of STMicroelectronics nor the names of its contributors
mridup 0:dc55f40eb04f 21 * may be used to endorse or promote products derived from this software
mridup 0:dc55f40eb04f 22 * without specific prior written permission.
mridup 0:dc55f40eb04f 23 *
mridup 0:dc55f40eb04f 24 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
mridup 0:dc55f40eb04f 25 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
mridup 0:dc55f40eb04f 26 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
mridup 0:dc55f40eb04f 27 * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
mridup 0:dc55f40eb04f 28 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
mridup 0:dc55f40eb04f 29 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
mridup 0:dc55f40eb04f 30 * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
mridup 0:dc55f40eb04f 31 * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
mridup 0:dc55f40eb04f 32 * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
mridup 0:dc55f40eb04f 33 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
mridup 0:dc55f40eb04f 34 *
mridup 0:dc55f40eb04f 35 ******************************************************************************
mridup 0:dc55f40eb04f 36 */
mridup 0:dc55f40eb04f 37 /* Includes ------------------------------------------------------------------*/
mridup 0:dc55f40eb04f 38
mridup 0:dc55f40eb04f 39 #include <stddef.h>
mridup 0:dc55f40eb04f 40 #include "wifi_module.h"
mridup 0:dc55f40eb04f 41 #include "ring_buffer.h"
mridup 0:dc55f40eb04f 42 #include "device.h"
mridup 0:dc55f40eb04f 43 #include "wait_api.h"
mridup 0:dc55f40eb04f 44 #include "stdio.h"
mridup 0:dc55f40eb04f 45 #include "string.h"
mridup 0:dc55f40eb04f 46 #include "wifi_driver.h"
mridup 0:dc55f40eb04f 47
mridup 0:dc55f40eb04f 48 void Wifi_ticker(void)
mridup 0:dc55f40eb04f 49 {
mridup 0:dc55f40eb04f 50 Wifi_SysTick_Isr();
mridup 0:dc55f40eb04f 51 }
mridup 0:dc55f40eb04f 52
mridup 0:dc55f40eb04f 53 void Wifi_scheduler(void)
mridup 0:dc55f40eb04f 54 {
mridup 0:dc55f40eb04f 55 Wifi_TIM_Handler();
mridup 0:dc55f40eb04f 56 }
mridup 0:dc55f40eb04f 57
mridup 0:dc55f40eb04f 58 void Rx_irq_handler(void)
mridup 0:dc55f40eb04f 59 {
mridup 0:dc55f40eb04f 60
mridup 0:dc55f40eb04f 61 uint8_t data_byte = (uint8_t)callSpwfSADevice_getChar(spwf_dev);
mridup 0:dc55f40eb04f 62
mridup 0:dc55f40eb04f 63 status_flag.Uartx_Rx_Processing = WIFI_FALSE;
mridup 0:dc55f40eb04f 64
mridup 0:dc55f40eb04f 65 Stop_Timer();
mridup 0:dc55f40eb04f 66 __disable_irq();
mridup 0:dc55f40eb04f 67 push_buffer(&big_buff, &data_byte);
mridup 0:dc55f40eb04f 68 __enable_irq();
mridup 0:dc55f40eb04f 69 Start_Timer();
mridup 0:dc55f40eb04f 70
mridup 0:dc55f40eb04f 71 status_flag.Uartx_Rx_Processing = WIFI_TRUE;
mridup 0:dc55f40eb04f 72
mridup 0:dc55f40eb04f 73 /*if(is_half_full(&big_buff))
mridup 0:dc55f40eb04f 74 {
mridup 0:dc55f40eb04f 75 status_flag.resume_receive_data = WIFI_TRUE;
mridup 0:dc55f40eb04f 76 if(callSpwfSADevice_read_rts(spwf_dev))
mridup 0:dc55f40eb04f 77 callSpwfSADevice_rts(spwf_dev, GPIO_PIN_SET);
mridup 0:dc55f40eb04f 78 //callSpwfSADevice_attach(0);
mridup 0:dc55f40eb04f 79 } else
mridup 0:dc55f40eb04f 80 {
mridup 0:dc55f40eb04f 81 if(status_flag.AT_Cmd_Processing == WIFI_FALSE)
mridup 0:dc55f40eb04f 82 {
mridup 0:dc55f40eb04f 83 status_flag.Uartx_Rx_Processing = WIFI_TRUE;
mridup 0:dc55f40eb04f 84 }
mridup 0:dc55f40eb04f 85 }*/
mridup 0:dc55f40eb04f 86 }
mridup 0:dc55f40eb04f 87
mridup 0:dc55f40eb04f 88
mridup 0:dc55f40eb04f 89 /**
mridup 0:dc55f40eb04f 90 * @brief wifi_reset
mridup 0:dc55f40eb04f 91 * Reset WiFi module using PC12 gpio pin
mridup 0:dc55f40eb04f 92 * @param None
mridup 0:dc55f40eb04f 93 * @retval None
mridup 0:dc55f40eb04f 94 */
mridup 0:dc55f40eb04f 95 void wifi_reset(void)
mridup 0:dc55f40eb04f 96 {
mridup 0:dc55f40eb04f 97 WiFi_Module_State = Process_Event;
mridup 0:dc55f40eb04f 98 WiFi_WIND_State.WiFiHWStarted = WIFI_FALSE;
mridup 0:dc55f40eb04f 99 wifi_connected = 0; //reset wifi_connected to get user callback
mridup 0:dc55f40eb04f 100 memset((void*)&WiFi_WIND_State,0x00,sizeof(WiFi_WIND_State)); /*reset the WIND State?*/
mridup 0:dc55f40eb04f 101
mridup 0:dc55f40eb04f 102 /* === RESET PIN - PC12 ===*/
mridup 0:dc55f40eb04f 103
mridup 0:dc55f40eb04f 104 callSpwfSADevice_reset(spwf_dev, 0);
mridup 1:bd9db471d47d 105 wait_ms(200);
mridup 0:dc55f40eb04f 106
mridup 0:dc55f40eb04f 107 callSpwfSADevice_reset(spwf_dev, 1);
mridup 0:dc55f40eb04f 108 wait_ms(100);
mridup 0:dc55f40eb04f 109
mridup 0:dc55f40eb04f 110 while(WiFi_WIND_State.WiFiHWStarted != WIFI_TRUE)
mridup 0:dc55f40eb04f 111 {
mridup 0:dc55f40eb04f 112 //nothing to do
mridup 0:dc55f40eb04f 113 __NOP();
mridup 0:dc55f40eb04f 114 }
mridup 0:dc55f40eb04f 115 }
mridup 0:dc55f40eb04f 116
mridup 0:dc55f40eb04f 117
mridup 0:dc55f40eb04f 118 /**
mridup 0:dc55f40eb04f 119 * @brief PowerUp_WiFi_Module
mridup 0:dc55f40eb04f 120 * Power up Wi-Fi module,SET GPIO PA0 pin
mridup 0:dc55f40eb04f 121 * @param None
mridup 0:dc55f40eb04f 122 * @retval None
mridup 0:dc55f40eb04f 123 */
mridup 0:dc55f40eb04f 124 void PowerUp_WiFi_Module(void)
mridup 0:dc55f40eb04f 125 {
mridup 0:dc55f40eb04f 126 /* === SET PIN - PC12 ===*/
mridup 0:dc55f40eb04f 127 callSpwfSADevice_reset(spwf_dev, 1);
mridup 0:dc55f40eb04f 128 wait_ms(50);
mridup 0:dc55f40eb04f 129 }
mridup 0:dc55f40eb04f 130
mridup 0:dc55f40eb04f 131 /**
mridup 0:dc55f40eb04f 132 * @brief Receive_Data
mridup 0:dc55f40eb04f 133 * Receive data from UART port
mridup 0:dc55f40eb04f 134 * @param uint8_t number of bytes to be received
mridup 0:dc55f40eb04f 135 * @retval None
mridup 0:dc55f40eb04f 136 */
mridup 0:dc55f40eb04f 137 void Receive_Data(void)
mridup 0:dc55f40eb04f 138 {
mridup 0:dc55f40eb04f 139 callSpwfSADevice_rts(spwf_dev, 0);
mridup 0:dc55f40eb04f 140 }
mridup 0:dc55f40eb04f 141
mridup 0:dc55f40eb04f 142
mridup 0:dc55f40eb04f 143 /**
mridup 0:dc55f40eb04f 144 * @brief USART_Transmit_AT_Cmd
mridup 0:dc55f40eb04f 145 * send AT cmd on UART port of wifi module.
mridup 0:dc55f40eb04f 146 * @param size size of the AT command
mridup 0:dc55f40eb04f 147 * @retval WiFi_Status_t : status of AT cmd
mridup 0:dc55f40eb04f 148 */
mridup 0:dc55f40eb04f 149 WiFi_Status_t USART_Transmit_AT_Cmd(uint16_t size)
mridup 0:dc55f40eb04f 150 {
mridup 0:dc55f40eb04f 151 //Check for Hardware Started
mridup 0:dc55f40eb04f 152 if(status_flag.WiFi_Enabled == WIFI_FALSE)
mridup 0:dc55f40eb04f 153 return WiFi_NOT_READY;
mridup 0:dc55f40eb04f 154 //Check for Deep-Sleep or Standby Mode, return error if true
mridup 0:dc55f40eb04f 155 if (status_flag.Standby_Enabled == WIFI_TRUE || status_flag.Deep_Sleep_Enabled == WIFI_TRUE)
mridup 0:dc55f40eb04f 156 return WiFi_IN_LOW_POWER_ERROR;
mridup 0:dc55f40eb04f 157
mridup 0:dc55f40eb04f 158 status_flag.AT_Cmd_Processing = WIFI_TRUE;//Stop Any Rx between the TX call
mridup 0:dc55f40eb04f 159
mridup 0:dc55f40eb04f 160 if (size == 0)
mridup 0:dc55f40eb04f 161 {
mridup 0:dc55f40eb04f 162 return WiFi_UNHANDLED_IND_ERROR;
mridup 0:dc55f40eb04f 163 }
mridup 0:dc55f40eb04f 164
mridup 0:dc55f40eb04f 165 #if defined(USART3_INT_MODE)
mridup 0:dc55f40eb04f 166 if(HAL_UART_Transmit_IT(&UartWiFiHandle, (uint8_t *)WiFi_AT_Cmd_Buff, size)!= HAL_OK)
mridup 0:dc55f40eb04f 167 {
mridup 0:dc55f40eb04f 168 Error_Handler();
mridup 0:dc55f40eb04f 169 return WiFi_HAL_UART_ERROR;
mridup 0:dc55f40eb04f 170 }
mridup 0:dc55f40eb04f 171 while (UartReady != SET);
mridup 0:dc55f40eb04f 172 UartReady = RESET;
mridup 0:dc55f40eb04f 173
mridup 0:dc55f40eb04f 174 #elif defined(USART3_POLLING_MODE)
mridup 0:dc55f40eb04f 175
mridup 0:dc55f40eb04f 176 callSpwfSADevice_write(spwf_dev, (const char *) WiFi_AT_Cmd_Buff, size);
mridup 0:dc55f40eb04f 177
mridup 0:dc55f40eb04f 178 #else
mridup 0:dc55f40eb04f 179 #error "Please select USART mode in your application (in wifi_module.h file)"
mridup 0:dc55f40eb04f 180 #endif
mridup 0:dc55f40eb04f 181
mridup 0:dc55f40eb04f 182 status_flag.AT_Cmd_Processing = WIFI_FALSE;//Re-enable Rx for UART
mridup 0:dc55f40eb04f 183 if(status_flag.Uartx_Rx_Processing == WIFI_FALSE)
mridup 0:dc55f40eb04f 184 Receive_Data();//Start receiving Rx from the UART again, if and only if it was stopped in the previous Uartx_Rx_Handler
mridup 0:dc55f40eb04f 185 return WiFi_MODULE_SUCCESS;
mridup 0:dc55f40eb04f 186 }
mridup 0:dc55f40eb04f 187
mridup 6:e7a3fca2df10 188 /**
mridup 6:e7a3fca2df10 189 * @brief wifi_socket_server_write
mridup 6:e7a3fca2df10 190 * Write to a Server socket
mridup 6:e7a3fca2df10 191 * @param None
mridup 6:e7a3fca2df10 192 * @retval WiFi_Status_t : return status of server socket request
mridup 6:e7a3fca2df10 193 */
mridup 6:e7a3fca2df10 194 WiFi_Status_t wifi_socket_server_write(uint16_t DataLength,char * pData)
mridup 6:e7a3fca2df10 195 {
mridup 6:e7a3fca2df10 196 WiFi_Status_t status = WiFi_MODULE_SUCCESS;
mridup 6:e7a3fca2df10 197 /*Can only write if there is a client connected*/
mridup 6:e7a3fca2df10 198 if(!wifi_client_connected)
mridup 6:e7a3fca2df10 199 {
mridup 6:e7a3fca2df10 200 return WiFi_NOT_READY;
mridup 6:e7a3fca2df10 201 }
mridup 6:e7a3fca2df10 202 __disable_irq();
mridup 6:e7a3fca2df10 203
mridup 6:e7a3fca2df10 204 status_flag.do_not_reset_push_WIFI_event = WIFI_TRUE;
mridup 6:e7a3fca2df10 205 status_flag.prevent_push_WIFI_event = WIFI_TRUE;
mridup 6:e7a3fca2df10 206 __enable_irq();
mridup 6:e7a3fca2df10 207
mridup 6:e7a3fca2df10 208 while(status_flag.sock_read_ongoing || WIND64_count!= 0)//wait till any pending data is read
mridup 6:e7a3fca2df10 209 {
mridup 6:e7a3fca2df10 210 asm("NOP");
mridup 6:e7a3fca2df10 211 }
mridup 6:e7a3fca2df10 212
mridup 6:e7a3fca2df10 213 wait_for_command_mode();
mridup 6:e7a3fca2df10 214
mridup 6:e7a3fca2df10 215 /*to make sure that by default the mode is not switched to command mode from data mode*/
mridup 6:e7a3fca2df10 216 status_flag.switch_by_default_to_command_mode = WIFI_FALSE;
mridup 6:e7a3fca2df10 217
mridup 6:e7a3fca2df10 218 /*Switch to Data Mode first*/
mridup 6:e7a3fca2df10 219 if(!status_flag.data_mode)
mridup 6:e7a3fca2df10 220 {
mridup 6:e7a3fca2df10 221 WiFi_switch_to_data_mode();//switch by default
mridup 6:e7a3fca2df10 222 while(!status_flag.data_mode)
mridup 6:e7a3fca2df10 223 {
mridup 6:e7a3fca2df10 224 //Wait till data_mode is active
mridup 6:e7a3fca2df10 225 asm("NOP");
mridup 6:e7a3fca2df10 226 }
mridup 6:e7a3fca2df10 227 }
mridup 6:e7a3fca2df10 228
mridup 6:e7a3fca2df10 229 callSpwfSADevice_write(spwf_dev, (const char *) pData, DataLength);
mridup 6:e7a3fca2df10 230
mridup 6:e7a3fca2df10 231 /*Write the data on the uart*/
mridup 6:e7a3fca2df10 232 /*if(HAL_UART_Transmit(&UartWiFiHandle, (uint8_t *)pData, DataLength,1000)!= HAL_OK)
mridup 6:e7a3fca2df10 233 {
mridup 6:e7a3fca2df10 234 Error_Handler();
mridup 6:e7a3fca2df10 235 return WiFi_HAL_UART_ERROR;
mridup 6:e7a3fca2df10 236 }*/
mridup 6:e7a3fca2df10 237 //HAL_Delay(100);//Wait for tx before switching back to command mode
mridup 6:e7a3fca2df10 238
mridup 6:e7a3fca2df10 239 /*Switch back to Command Mode*/
mridup 6:e7a3fca2df10 240 if(!status_flag.command_mode)
mridup 6:e7a3fca2df10 241 {
mridup 6:e7a3fca2df10 242 WiFi_switch_to_command_mode();//switch by default
mridup 6:e7a3fca2df10 243 while(!status_flag.command_mode)
mridup 6:e7a3fca2df10 244 {
mridup 6:e7a3fca2df10 245 //Wait till command_mode is active
mridup 6:e7a3fca2df10 246 asm("NOP");
mridup 6:e7a3fca2df10 247 }
mridup 6:e7a3fca2df10 248 }
mridup 6:e7a3fca2df10 249
mridup 6:e7a3fca2df10 250 status_flag.switch_by_default_to_command_mode = WIFI_TRUE; /*back to default behaviour*/
mridup 6:e7a3fca2df10 251
mridup 6:e7a3fca2df10 252 __disable_irq();
mridup 6:e7a3fca2df10 253 status_flag.prevent_push_WIFI_event = WIFI_FALSE;
mridup 6:e7a3fca2df10 254 status_flag.do_not_reset_push_WIFI_event = WIFI_FALSE;
mridup 6:e7a3fca2df10 255 __enable_irq();
mridup 6:e7a3fca2df10 256
mridup 6:e7a3fca2df10 257 return status;
mridup 6:e7a3fca2df10 258 }