/*\r
- FreeRTOS V8.1.2 - Copyright (C) 2014 Real Time Engineers Ltd.\r
- All rights reserved\r
-\r
- VISIT http://www.FreeRTOS.org TO ENSURE YOU ARE USING THE LATEST VERSION.\r
-\r
- ***************************************************************************\r
- * *\r
- * FreeRTOS provides completely free yet professionally developed, *\r
- * robust, strictly quality controlled, supported, and cross *\r
- * platform software that has become a de facto standard. *\r
- * *\r
- * Help yourself get started quickly and support the FreeRTOS *\r
- * project by purchasing a FreeRTOS tutorial book, reference *\r
- * manual, or both from: http://www.FreeRTOS.org/Documentation *\r
- * *\r
- * Thank you! *\r
- * *\r
- ***************************************************************************\r
-\r
- This file is part of the FreeRTOS distribution.\r
-\r
- FreeRTOS is free software; you can redistribute it and/or modify it under\r
- the terms of the GNU General Public License (version 2) as published by the\r
- Free Software Foundation >>!AND MODIFIED BY!<< the FreeRTOS exception.\r
-\r
- >>! NOTE: The modification to the GPL is included to allow you to !<<\r
- >>! distribute a combined work that includes FreeRTOS without being !<<\r
- >>! obliged to provide the source code for proprietary components !<<\r
- >>! outside of the FreeRTOS kernel. !<<\r
-\r
- FreeRTOS is distributed in the hope that it will be useful, but WITHOUT ANY\r
- WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS\r
- FOR A PARTICULAR PURPOSE. Full license text is available from the following\r
- link: http://www.freertos.org/a00114.html\r
-\r
- 1 tab == 4 spaces!\r
-\r
- ***************************************************************************\r
- * *\r
- * Having a problem? Start by reading the FAQ "My application does *\r
- * not run, what could be wrong?" *\r
- * *\r
- * http://www.FreeRTOS.org/FAQHelp.html *\r
- * *\r
- ***************************************************************************\r
-\r
- http://www.FreeRTOS.org - Documentation, books, training, latest versions,\r
- license and Real Time Engineers Ltd. contact details.\r
-\r
- http://www.FreeRTOS.org/plus - A selection of FreeRTOS ecosystem products,\r
- including FreeRTOS+Trace - an indispensable productivity tool, a DOS\r
- compatible FAT file system, and our tiny thread aware UDP/IP stack.\r
-\r
- http://www.OpenRTOS.com - Real Time Engineers ltd license FreeRTOS to High\r
- Integrity Systems to sell under the OpenRTOS brand. Low cost OpenRTOS\r
- licenses offer ticketed support, indemnification and middleware.\r
-\r
- http://www.SafeRTOS.com - High Integrity Systems also provide a safety\r
- engineered and independently SIL3 certified version for use in safety and\r
- mission critical applications that require provable dependability.\r
-\r
- 1 tab == 4 spaces!\r
-*/\r
+ * FreeRTOS Kernel V10.2.1\r
+ * Copyright (C) 2019 Amazon.com, Inc. or its affiliates. All Rights Reserved.\r
+ *\r
+ * Permission is hereby granted, free of charge, to any person obtaining a copy of\r
+ * this software and associated documentation files (the "Software"), to deal in\r
+ * the Software without restriction, including without limitation the rights to\r
+ * use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of\r
+ * the Software, and to permit persons to whom the Software is furnished to do so,\r
+ * subject to the following conditions:\r
+ *\r
+ * The above copyright notice and this permission notice shall be included in all\r
+ * copies or substantial portions of the Software.\r
+ *\r
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR\r
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS\r
+ * FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR\r
+ * COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER\r
+ * IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN\r
+ * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.\r
+ *\r
+ * http://www.FreeRTOS.org\r
+ * http://aws.amazon.com/freertos\r
+ *\r
+ * 1 tab == 4 spaces!\r
+ */\r
\r
/*\r
* This file initialises three timers as follows:\r
\r
/* The high frequency interrupt given the highest priority or all. The priority\r
of the lower frequency timers must still be above the tick interrupt priority. */\r
-#define tmrLOWER_PRIORITY 1\r
+#define tmrLOWER_PRIORITY 3\r
#define tmrHIGHER_PRIORITY 5\r
/*-----------------------------------------------------------*/\r
\r
const uint32_t ulDivider = 128UL, ulTCCLKS = 3UL;\r
\r
/* Enable the TC clocks. */\r
- PMC->PMC_PCER0 = 1 << ID_TC0;\r
- PMC->PMC_PCER0 = 1 << ID_TC1;\r
+ PMC_EnablePeripheral( ID_TC0 );\r
+ PMC_EnablePeripheral( ID_TC1 );\r
\r
/* Configure TC0 channel 0 for a tmrTIMER_0_FREQUENCY frequency and trigger\r
- on RC compare. */\r
+ on RC compare. This is part of the IntQTimer test. */\r
TC_Configure( TC0, tmrTC0_CHANNEL_0, ulTCCLKS | TC_CMR_CPCTRG );\r
- TC0->TC_CHANNEL[ tmrTC0_CHANNEL_0 ].TC_RC = BOARD_MCK / ( tmrTIMER_0_FREQUENCY * ulDivider );\r
+ TC0->TC_CHANNEL[ tmrTC0_CHANNEL_0 ].TC_RC = ( BOARD_MCK / 2 ) / ( tmrTIMER_0_FREQUENCY * ulDivider );\r
TC0->TC_CHANNEL[ tmrTC0_CHANNEL_0 ].TC_IER = TC_IER_CPCS;\r
\r
/* Configure TC0 channel 1 for a tmrTIMER_1_FREQUENCY frequency and trigger\r
- on RC compare. */\r
+ on RC compare. This is part of the IntQTimer test. */\r
TC_Configure( TC0, tmrTC0_CHANNEL_1, ulTCCLKS | TC_CMR_CPCTRG );\r
- TC0->TC_CHANNEL[ tmrTC0_CHANNEL_1 ].TC_RC = BOARD_MCK / ( tmrTIMER_1_FREQUENCY * ulDivider );\r
+ TC0->TC_CHANNEL[ tmrTC0_CHANNEL_1 ].TC_RC = ( BOARD_MCK / 2 ) / ( tmrTIMER_1_FREQUENCY * ulDivider );\r
TC0->TC_CHANNEL[ tmrTC0_CHANNEL_1 ].TC_IER = TC_IER_CPCS;\r
\r
/* Configure TC1 channel 0 tmrTIMER_2_FREQUENCY frequency and trigger on\r
- RC compare. */\r
+ RC compare. This is the very high frequency timer. */\r
TC_Configure( TC1, tmrTC1_CHANNEL_0, ulTCCLKS | TC_CMR_CPCTRG );\r
TC1->TC_CHANNEL[ tmrTC1_CHANNEL_0 ].TC_RC = BOARD_MCK / ( tmrTIMER_2_FREQUENCY * ulDivider );\r
TC1->TC_CHANNEL[ tmrTC1_CHANNEL_0 ].TC_IER = TC_IER_CPCS;\r
\r
- /* Enable interrupts and start the timers. */\r
- IRQ_ConfigureIT( ID_TC0, tmrLOWER_PRIORITY, prvTC0_Handler );\r
- IRQ_ConfigureIT( ID_TC1, tmrHIGHER_PRIORITY, prvTC1_Handler );\r
- IRQ_EnableIT( ID_TC0 );\r
- IRQ_EnableIT( ID_TC1 );\r
+ /* First setup TC0 interrupt, in which two channels are used. */\r
+ AIC->AIC_SSR = ID_TC0;\r
+\r
+ /* Ensure the interrupt is disabled before setting mode and handler. */\r
+ AIC->AIC_IDCR = AIC_IDCR_INTD;\r
+ AIC->AIC_SMR = AIC_SMR_SRCTYPE_EXT_POSITIVE_EDGE | tmrLOWER_PRIORITY;\r
+ AIC->AIC_SVR = ( uint32_t ) prvTC0_Handler;\r
+\r
+ /* Start with the interrupt clear. */\r
+ AIC->AIC_ICCR = AIC_ICCR_INTCLR;\r
+\r
+ /* Do the same for TC1 - which is the high frequency timer. */\r
+ AIC->AIC_SSR = ID_TC1;\r
+ AIC->AIC_IDCR = AIC_IDCR_INTD;\r
+ AIC->AIC_SMR = AIC_SMR_SRCTYPE_EXT_POSITIVE_EDGE | tmrHIGHER_PRIORITY;\r
+ AIC->AIC_SVR = ( uint32_t ) prvTC1_Handler;\r
+ AIC->AIC_ICCR = AIC_ICCR_INTCLR;\r
+\r
+ /* Finally enable the interrupts and start the timers. */\r
+ AIC_EnableIT( ID_TC0 );\r
+ AIC_EnableIT( ID_TC1 );\r
TC_Start( TC0, tmrTC0_CHANNEL_0 );\r
TC_Start( TC0, tmrTC0_CHANNEL_1 );\r
TC_Start( TC1, tmrTC1_CHANNEL_0 );\r
\r
static void prvTC0_Handler( void )\r
{\r
- /* Read will clear the status bit. */\r
- if( ( TC0->TC_CHANNEL[ tmrTC0_CHANNEL_0 ].TC_SR & tmrRC_COMPARE ) != 0 )\r
- {\r
- portYIELD_FROM_ISR( xFirstTimerHandler() );\r
- }\r
+uint32_t ulDidSomething;\r
\r
- if( ( TC0->TC_CHANNEL[ tmrTC0_CHANNEL_1 ].TC_SR & tmrRC_COMPARE ) != 0 )\r
+ do\r
{\r
- portYIELD_FROM_ISR( xSecondTimerHandler() );\r
- }\r
+ ulDidSomething = pdFALSE;\r
+\r
+ /* Read will clear the status bit. */\r
+ if( ( TC0->TC_CHANNEL[ tmrTC0_CHANNEL_0 ].TC_SR & tmrRC_COMPARE ) != 0 )\r
+ {\r
+ /* Call the IntQ test function for this channel. */\r
+ portYIELD_FROM_ISR( xFirstTimerHandler() );\r
+ ulDidSomething = pdTRUE;\r
+ }\r
+\r
+ if( ( TC0->TC_CHANNEL[ tmrTC0_CHANNEL_1 ].TC_SR & tmrRC_COMPARE ) != 0 )\r
+ {\r
+ /* Call the IntQ test function for this channel. */\r
+ portYIELD_FROM_ISR( xSecondTimerHandler() );\r
+ ulDidSomething = pdTRUE;\r
+ }\r
+\r
+ } while( ulDidSomething == pdTRUE );\r
}\r
/*-----------------------------------------------------------*/\r
\r
projects / freertos / blobdiff