#include <stdlib.h>
#include "FreeRTOS.h"
#include "task.h"
#include "serial.h"
#include "comtest.h"
#include "partest.h"
Go to the source code of this file.
Defines | |
| #define | comBUFFER_LEN ( ( unsigned portBASE_TYPE ) ( comLAST_BYTE - comFIRST_BYTE ) + ( unsigned portBASE_TYPE ) 1 ) |
| #define | comFIRST_BYTE ( 'A' ) |
| #define | comINITIAL_RX_COUNT_VALUE ( 0 ) |
| #define | comLAST_BYTE ( 'X' ) |
| #define | comNO_BLOCK ( ( portTickType ) 0 ) |
| #define | comOFFSET_TIME ( ( portTickType ) 3 ) |
| #define | comRX_BLOCK_TIME ( ( portTickType ) 0xffff ) |
| #define | comRX_LED_OFFSET ( 1 ) |
| #define | comSTACK_SIZE configMINIMAL_STACK_SIZE |
| #define | comTOTAL_PERMISSIBLE_ERRORS ( 2 ) |
| #define | comTX_LED_OFFSET ( 0 ) |
| #define | comTX_MAX_BLOCK_TIME ( ( portTickType ) 0x96 ) |
| #define | comTX_MIN_BLOCK_TIME ( ( portTickType ) 0x32 ) |
Functions | |
| static | portTASK_FUNCTION (vComRxTask, pvParameters) |
| static | portTASK_FUNCTION (vComTxTask, pvParameters) |
| static | portTASK_FUNCTION_PROTO (vComRxTask, pvParameters) |
| static | portTASK_FUNCTION_PROTO (vComTxTask, pvParameters) |
| void | vAltStartComTestTasks (unsigned portBASE_TYPE uxPriority, unsigned long ulBaudRate, unsigned portBASE_TYPE uxLED) |
| portBASE_TYPE | xAreComTestTasksStillRunning (void) |
Variables | |
| static unsigned portBASE_TYPE | uxBaseLED = 0 |
| static volatile unsigned portBASE_TYPE | uxRxLoops = comINITIAL_RX_COUNT_VALUE |
| static xComPortHandle | xPort = NULL |
| #define comBUFFER_LEN ( ( unsigned portBASE_TYPE ) ( comLAST_BYTE - comFIRST_BYTE ) + ( unsigned portBASE_TYPE ) 1 ) |
| #define comFIRST_BYTE ( 'A' ) |
| #define comINITIAL_RX_COUNT_VALUE ( 0 ) |
| #define comLAST_BYTE ( 'X' ) |
| #define comNO_BLOCK ( ( portTickType ) 0 ) |
| #define comOFFSET_TIME ( ( portTickType ) 3 ) |
| #define comRX_BLOCK_TIME ( ( portTickType ) 0xffff ) |
| #define comRX_LED_OFFSET ( 1 ) |
| #define comSTACK_SIZE configMINIMAL_STACK_SIZE |
| #define comTOTAL_PERMISSIBLE_ERRORS ( 2 ) |
| #define comTX_LED_OFFSET ( 0 ) |
| #define comTX_MAX_BLOCK_TIME ( ( portTickType ) 0x96 ) |
| #define comTX_MIN_BLOCK_TIME ( ( portTickType ) 0x32 ) |
| static portTASK_FUNCTION | ( | vComRxTask | , | |
| pvParameters | ||||
| ) | [static] |
Definition at line 196 of file comtest.c.
References comFIRST_BYTE, comLAST_BYTE, comRX_BLOCK_TIME, comRX_LED_OFFSET, comTOTAL_PERMISSIBLE_ERRORS, pdFALSE, pdTRUE, portBASE_TYPE, uxBaseLED, uxRxLoops, vParTestSetLED(), vParTestToggleLED(), xErrorOccurred, xPort, and xSerialGetChar().
00197 { 00198 signed char cExpectedByte, cByteRxed; 00199 portBASE_TYPE xResyncRequired = pdFALSE, xErrorOccurred = pdFALSE; 00200 00201 /* Just to stop compiler warnings. */ 00202 ( void ) pvParameters; 00203 00204 for( ;; ) 00205 { 00206 /* We expect to receive the characters from comFIRST_BYTE to 00207 comLAST_BYTE in an incrementing order. Loop to receive each byte. */ 00208 for( cExpectedByte = comFIRST_BYTE; cExpectedByte <= comLAST_BYTE; cExpectedByte++ ) 00209 { 00210 /* Block on the queue that contains received bytes until a byte is 00211 available. */ 00212 if( xSerialGetChar( xPort, &cByteRxed, comRX_BLOCK_TIME ) ) 00213 { 00214 /* Was this the byte we were expecting? If so, toggle the LED, 00215 otherwise we are out on sync and should break out of the loop 00216 until the expected character sequence is about to restart. */ 00217 if( cByteRxed == cExpectedByte ) 00218 { 00219 vParTestToggleLED( uxBaseLED + comRX_LED_OFFSET ); 00220 } 00221 else 00222 { 00223 xResyncRequired = pdTRUE; 00224 break; /*lint !e960 Non-switch break allowed. */ 00225 } 00226 } 00227 } 00228 00229 /* Turn the LED off while we are not doing anything. */ 00230 vParTestSetLED( uxBaseLED + comRX_LED_OFFSET, pdFALSE ); 00231 00232 /* Did we break out of the loop because the characters were received in 00233 an unexpected order? If so wait here until the character sequence is 00234 about to restart. */ 00235 if( xResyncRequired == pdTRUE ) 00236 { 00237 while( cByteRxed != comLAST_BYTE ) 00238 { 00239 /* Block until the next char is available. */ 00240 xSerialGetChar( xPort, &cByteRxed, comRX_BLOCK_TIME ); 00241 } 00242 00243 /* Note that an error occurred which caused us to have to resync. 00244 We use this to stop incrementing the loop counter so 00245 sAreComTestTasksStillRunning() will return false - indicating an 00246 error. */ 00247 xErrorOccurred++; 00248 00249 /* We have now resynced with the Tx task and can continue. */ 00250 xResyncRequired = pdFALSE; 00251 } 00252 else 00253 { 00254 if( xErrorOccurred < comTOTAL_PERMISSIBLE_ERRORS ) 00255 { 00256 /* Increment the count of successful loops. As error 00257 occurring (i.e. an unexpected character being received) will 00258 prevent this counter being incremented for the rest of the 00259 execution. Don't worry about mutual exclusion on this 00260 variable - it doesn't really matter as we just want it 00261 to change. */ 00262 uxRxLoops++; 00263 } 00264 } 00265 } 00266 } /*lint !e715 !e818 pvParameters is required for a task function even if it is not referenced. */
| static portTASK_FUNCTION | ( | vComTxTask | , | |
| pvParameters | ||||
| ) | [static] |
Definition at line 154 of file comtest.c.
References comFIRST_BYTE, comLAST_BYTE, comNO_BLOCK, comOFFSET_TIME, comTX_LED_OFFSET, comTX_MAX_BLOCK_TIME, comTX_MIN_BLOCK_TIME, pdFALSE, pdPASS, uxBaseLED, vParTestSetLED(), vParTestToggleLED(), vTaskDelay(), xPort, xSerialPutChar(), and xTaskGetTickCount().
00155 { 00156 signed char cByteToSend; 00157 portTickType xTimeToWait; 00158 00159 /* Just to stop compiler warnings. */ 00160 ( void ) pvParameters; 00161 00162 for( ;; ) 00163 { 00164 /* Simply transmit a sequence of characters from comFIRST_BYTE to 00165 comLAST_BYTE. */ 00166 for( cByteToSend = comFIRST_BYTE; cByteToSend <= comLAST_BYTE; cByteToSend++ ) 00167 { 00168 if( xSerialPutChar( xPort, cByteToSend, comNO_BLOCK ) == pdPASS ) 00169 { 00170 vParTestToggleLED( uxBaseLED + comTX_LED_OFFSET ); 00171 } 00172 } 00173 00174 /* Turn the LED off while we are not doing anything. */ 00175 vParTestSetLED( uxBaseLED + comTX_LED_OFFSET, pdFALSE ); 00176 00177 /* We have posted all the characters in the string - wait before 00178 re-sending. Wait a pseudo-random time as this will provide a better 00179 test. */ 00180 xTimeToWait = xTaskGetTickCount() + comOFFSET_TIME; 00181 00182 /* Make sure we don't wait too long... */ 00183 xTimeToWait %= comTX_MAX_BLOCK_TIME; 00184 00185 /* ...but we do want to wait. */ 00186 if( xTimeToWait < comTX_MIN_BLOCK_TIME ) 00187 { 00188 xTimeToWait = comTX_MIN_BLOCK_TIME; 00189 } 00190 00191 vTaskDelay( xTimeToWait ); 00192 } 00193 } /*lint !e715 !e818 pvParameters is required for a task function even if it is not referenced. */
| static portTASK_FUNCTION_PROTO | ( | vComRxTask | , | |
| pvParameters | ||||
| ) | [static] |
| static portTASK_FUNCTION_PROTO | ( | vComTxTask | , | |
| pvParameters | ||||
| ) | [static] |
| void vAltStartComTestTasks | ( | unsigned portBASE_TYPE | uxPriority, | |
| unsigned long | ulBaudRate, | |||
| unsigned portBASE_TYPE | uxLED | |||
| ) |
Definition at line 142 of file comtest.c.
References comBUFFER_LEN, comSTACK_SIZE, uxBaseLED, xSerialPortInitMinimal(), and xTaskCreate.
Referenced by main().
00143 { 00144 /* Initialise the com port then spawn the Rx and Tx tasks. */ 00145 uxBaseLED = uxLED; 00146 xSerialPortInitMinimal( ulBaudRate, comBUFFER_LEN ); 00147 00148 /* The Tx task is spawned with a lower priority than the Rx task. */ 00149 xTaskCreate( vComTxTask, ( signed char * ) "COMTx", comSTACK_SIZE, NULL, uxPriority - 1, ( xTaskHandle * ) NULL ); 00150 xTaskCreate( vComRxTask, ( signed char * ) "COMRx", comSTACK_SIZE, NULL, uxPriority, ( xTaskHandle * ) NULL ); 00151 }
| portBASE_TYPE xAreComTestTasksStillRunning | ( | void | ) |
Definition at line 269 of file comtest.c.
References comINITIAL_RX_COUNT_VALUE, pdFALSE, pdTRUE, portBASE_TYPE, and uxRxLoops.
Referenced by prvCheckOtherTasksAreStillRunning().
00270 { 00271 portBASE_TYPE xReturn; 00272 00273 /* If the count of successful reception loops has not changed than at 00274 some time an error occurred (i.e. a character was received out of sequence) 00275 and we will return false. */ 00276 if( uxRxLoops == comINITIAL_RX_COUNT_VALUE ) 00277 { 00278 xReturn = pdFALSE; 00279 } 00280 else 00281 { 00282 xReturn = pdTRUE; 00283 } 00284 00285 /* Reset the count of successful Rx loops. When this function is called 00286 again we expect this to have been incremented. */ 00287 uxRxLoops = comINITIAL_RX_COUNT_VALUE; 00288 00289 return xReturn; 00290 }
unsigned portBASE_TYPE uxBaseLED = 0 [static] |
Definition at line 133 of file comtest.c.
Referenced by portTASK_FUNCTION(), and vAltStartComTestTasks().
volatile unsigned portBASE_TYPE uxRxLoops = comINITIAL_RX_COUNT_VALUE [static] |
Definition at line 138 of file comtest.c.
Referenced by portTASK_FUNCTION(), and xAreComTestTasksStillRunning().
xComPortHandle xPort = NULL [static] |
1.5.5