2 * FreeRTOS Kernel V10.3.0
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3 * Copyright (C) 2020 Amazon.com, Inc. or its affiliates. All Rights Reserved.
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5 * Permission is hereby granted, free of charge, to any person obtaining a copy of
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6 * this software and associated documentation files (the "Software"), to deal in
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7 * the Software without restriction, including without limitation the rights to
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8 * use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of
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9 * the Software, and to permit persons to whom the Software is furnished to do so,
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10 * subject to the following conditions:
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12 * The above copyright notice and this permission notice shall be included in all
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13 * copies or substantial portions of the Software.
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15 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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16 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS
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17 * FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR
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18 * COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER
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19 * IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
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20 * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
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22 * http://www.FreeRTOS.org
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23 * http://aws.amazon.com/freertos
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25 * 1 tab == 4 spaces!
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28 /* Standard includes. */
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31 /* Scheduler includes. */
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32 #include "FreeRTOS.h"
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38 #include "uip_arp.h"
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41 #include "clock-arch.h"
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43 /* Demo includes. */
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44 #include "EthDev_LPC17xx.h"
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46 #include "ParTest.h"
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48 /*-----------------------------------------------------------*/
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50 /* How long to wait before attempting to connect the MAC again. */
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51 #define uipINIT_WAIT ( 100 / portTICK_PERIOD_MS )
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53 /* Shortcut to the header within the Rx buffer. */
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54 #define xHeader ((struct uip_eth_hdr *) &uip_buf[ 0 ])
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56 /* Standard constant. */
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57 #define uipTOTAL_FRAME_HEADER_SIZE 54
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59 /*-----------------------------------------------------------*/
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62 * Setup the MAC address in the MAC itself, and in the uIP stack.
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64 static void prvSetMACAddress( void );
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67 * Port functions required by the uIP stack.
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69 void clock_init( void );
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70 clock_time_t clock_time( void );
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72 /*-----------------------------------------------------------*/
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74 /* The semaphore used by the ISR to wake the uIP task. */
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75 SemaphoreHandle_t xEMACSemaphore = NULL;
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77 /*-----------------------------------------------------------*/
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79 void clock_init(void)
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81 /* This is done when the scheduler starts. */
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83 /*-----------------------------------------------------------*/
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85 clock_time_t clock_time( void )
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87 return xTaskGetTickCount();
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89 /*-----------------------------------------------------------*/
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91 void vuIP_Task( void *pvParameters )
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94 uip_ipaddr_t xIPAddr;
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95 struct timer periodic_timer, arp_timer;
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96 extern void ( vEMAC_ISR_Wrapper )( void );
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98 ( void ) pvParameters;
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100 /* Initialise the uIP stack. */
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101 timer_set( &periodic_timer, configTICK_RATE_HZ / 2 );
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102 timer_set( &arp_timer, configTICK_RATE_HZ * 10 );
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104 uip_ipaddr( xIPAddr, configIP_ADDR0, configIP_ADDR1, configIP_ADDR2, configIP_ADDR3 );
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105 uip_sethostaddr( xIPAddr );
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106 uip_ipaddr( xIPAddr, configNET_MASK0, configNET_MASK1, configNET_MASK2, configNET_MASK3 );
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107 uip_setnetmask( xIPAddr );
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110 /* Create the semaphore used to wake the uIP task. */
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111 vSemaphoreCreateBinary( xEMACSemaphore );
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113 /* Initialise the MAC. */
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114 while( lEMACInit() != pdPASS )
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116 vTaskDelay( uipINIT_WAIT );
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119 portENTER_CRITICAL();
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121 EMAC->IntEnable = ( INT_RX_DONE | INT_TX_DONE );
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123 /* Set the interrupt priority to the max permissible to cause some
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124 interrupt nesting. */
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125 NVIC_SetPriority( ENET_IRQn, configEMAC_INTERRUPT_PRIORITY );
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127 /* Enable the interrupt. */
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128 NVIC_EnableIRQ( ENET_IRQn );
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129 prvSetMACAddress();
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131 portEXIT_CRITICAL();
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136 /* Is there received data ready to be processed? */
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137 uip_len = ulGetEMACRxData();
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139 if( ( uip_len > 0 ) && ( uip_buf != NULL ) )
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141 /* Standard uIP loop taken from the uIP manual. */
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142 if( xHeader->type == htons( UIP_ETHTYPE_IP ) )
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147 /* If the above function invocation resulted in data that
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148 should be sent out on the network, the global variable
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149 uip_len is set to a value > 0. */
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153 vSendEMACTxData( uip_len );
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156 else if( xHeader->type == htons( UIP_ETHTYPE_ARP ) )
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160 /* If the above function invocation resulted in data that
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161 should be sent out on the network, the global variable
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162 uip_len is set to a value > 0. */
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165 vSendEMACTxData( uip_len );
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171 if( timer_expired( &periodic_timer ) && ( uip_buf != NULL ) )
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173 timer_reset( &periodic_timer );
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174 for( i = 0; i < UIP_CONNS; i++ )
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178 /* If the above function invocation resulted in data that
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179 should be sent out on the network, the global variable
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180 uip_len is set to a value > 0. */
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184 vSendEMACTxData( uip_len );
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188 /* Call the ARP timer function every 10 seconds. */
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189 if( timer_expired( &arp_timer ) )
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191 timer_reset( &arp_timer );
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197 /* We did not receive a packet, and there was no periodic
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198 processing to perform. Block for a fixed period. If a packet
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199 is received during this period we will be woken by the ISR
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200 giving us the Semaphore. */
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201 xSemaphoreTake( xEMACSemaphore, configTICK_RATE_HZ / 2 );
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206 /*-----------------------------------------------------------*/
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208 static void prvSetMACAddress( void )
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210 struct uip_eth_addr xAddr;
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212 /* Configure the MAC address in the uIP stack. */
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213 xAddr.addr[ 0 ] = configMAC_ADDR0;
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214 xAddr.addr[ 1 ] = configMAC_ADDR1;
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215 xAddr.addr[ 2 ] = configMAC_ADDR2;
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216 xAddr.addr[ 3 ] = configMAC_ADDR3;
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217 xAddr.addr[ 4 ] = configMAC_ADDR4;
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218 xAddr.addr[ 5 ] = configMAC_ADDR5;
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219 uip_setethaddr( xAddr );
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221 /*-----------------------------------------------------------*/
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223 void vApplicationProcessFormInput( char *pcInputString )
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226 extern void vParTestSetLEDState( long lState );
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228 /* Process the form input sent by the IO page of the served HTML. */
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230 c = strstr( pcInputString, "?" );
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233 /* Turn the FIO1 LED's on or off in accordance with the check box status. */
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234 if( strstr( c, "LED0=1" ) != NULL )
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236 vParTestSetLEDState( pdTRUE );
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240 vParTestSetLEDState( pdFALSE );
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