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Continue to develop the MSP430X IAR demo project - still a work in progress.

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This commit is contained in:
Richard Barry 2010-12-31 14:51:15 +00:00
parent df4e7ceba0
commit ae6380f70b
8 changed files with 522 additions and 32 deletions
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16
Demo/MSP430X_MSP430F5438_IAR/FreeRTOSConfig.h
View file

@ -69,18 +69,18 @@
#define configUSE_PREEMPTION 1
#define configUSE_IDLE_HOOK 1
#define configUSE_TICK_HOOK 1
#define configCPU_CLOCK_HZ ( 16000000UL )
#define configCPU_CLOCK_HZ ( 8000000UL )
#define configTICK_RATE_HZ ( ( portTickType ) 1000 )
#define configMAX_PRIORITIES ( ( unsigned portBASE_TYPE ) 5 )
#define configMINIMAL_STACK_SIZE ( ( unsigned short ) 60 )
#define configTOTAL_HEAP_SIZE ( ( size_t ) ( 5 * 1024 ) )
#define configTOTAL_HEAP_SIZE ( ( size_t ) ( 10 * 1024 ) )
#define configMAX_TASK_NAME_LEN ( 16 )
#define configUSE_TRACE_FACILITY 0
#define configUSE_16_BIT_TICKS 0
#define configIDLE_SHOULD_YIELD 1
#define configUSE_MUTEXES 1
#define configQUEUE_REGISTRY_SIZE 5
#define configGENERATE_RUN_TIME_STATS 0
#define configGENERATE_RUN_TIME_STATS 1
#define configCHECK_FOR_STACK_OVERFLOW 2
#define configUSE_RECURSIVE_MUTEXES 0
#define configUSE_MALLOC_FAILED_HOOK 1
@ -103,6 +103,16 @@ to exclude the API function. */
#define configTICK_INTERRUPT_VECTOR TIMER0_A0_VECTOR
/* Prevent the following definitions being included when FreeRTOSConfig.h
is included from an asm file. */
#ifdef __ICC430__
extern void vConfigureTimerForRunTimeStats( void );
extern inline unsigned long ulGetRunTimeStatsTime( void );
extern volatile unsigned long ulStatsOverflowCount;
#endif /* __ICCARM__ */
#define portCONFIGURE_TIMER_FOR_RUN_TIME_STATS() vConfigureTimerForRunTimeStats()
#define portGET_RUN_TIME_COUNTER_VALUE() ulGetRunTimeStatsTime()
#endif /* FREERTOS_CONFIG_H */

136
Demo/MSP430X_MSP430F5438_IAR/ParTest.c Normal file
View file

@ -0,0 +1,136 @@
/*
FreeRTOS V6.1.0 - Copyright (C) 2010 Real Time Engineers Ltd.
***************************************************************************
* *
* If you are: *
* *
* + New to FreeRTOS, *
* + Wanting to learn FreeRTOS or multitasking in general quickly *
* + Looking for basic training, *
* + Wanting to improve your FreeRTOS skills and productivity *
* *
* then take a look at the FreeRTOS books - available as PDF or paperback *
* *
* "Using the FreeRTOS Real Time Kernel - a Practical Guide" *
* http://www.FreeRTOS.org/Documentation *
* *
* A pdf reference manual is also available. Both are usually delivered *
* to your inbox within 20 minutes to two hours when purchased between 8am *
* and 8pm GMT (although please allow up to 24 hours in case of *
* exceptional circumstances). Thank you for your support! *
* *
***************************************************************************
This file is part of the FreeRTOS distribution.
FreeRTOS is free software; you can redistribute it and/or modify it under
the terms of the GNU General Public License (version 2) as published by the
Free Software Foundation AND MODIFIED BY the FreeRTOS exception.
***NOTE*** The exception to the GPL is included to allow you to distribute
a combined work that includes FreeRTOS without being obliged to provide the
source code for proprietary components outside of the FreeRTOS kernel.
FreeRTOS is distributed in the hope that it will be useful, but WITHOUT
ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
more details. You should have received a copy of the GNU General Public
License and the FreeRTOS license exception along with FreeRTOS; if not it
can be viewed here: http://www.freertos.org/a00114.html and also obtained
by writing to Richard Barry, contact details for whom are available on the
FreeRTOS WEB site.
1 tab == 4 spaces!
http://www.FreeRTOS.org - Documentation, latest information, license and
contact details.
http://www.SafeRTOS.com - A version that is certified for use in safety
critical systems.
http://www.OpenRTOS.com - Commercial support, development, porting,
licensing and training services.
*/
/*-----------------------------------------------------------
* Simple parallel port IO routines to flash LEDs.
*-----------------------------------------------------------*/
/* Kernel includes. */
#include "FreeRTOS.h"
#include "task.h"
/* Hardware includes. */
#include "msp430.h"
#include "hal_MSP-EXP430F5438.h"
/*-----------------------------------------------------------*/
void vParTestInitialise( void )
{
/* The port used by the two LEDs is configured from halBoardInit() so
nothing needs to be done here. */
}
/*-----------------------------------------------------------*/
void vParTestSetLED( unsigned portBASE_TYPE uxLED, signed portBASE_TYPE xValue )
{
taskENTER_CRITICAL();
{
if( xValue != pdFALSE )
{
switch( uxLED )
{
case 0: LED_PORT_OUT |= LED_1;
break;
case 1: LED_PORT_OUT |= LED_2;
break;
}
}
else
{
switch( uxLED )
{
case 0: LED_PORT_OUT &= ~LED_1;
break;
case 1: LED_PORT_OUT &= ~LED_2;
break;
}
}
}
taskEXIT_CRITICAL();
}
/*-----------------------------------------------------------*/
void vParTestToggleLED( unsigned portBASE_TYPE uxLED )
{
taskENTER_CRITICAL();
{
switch( uxLED )
{
case 0: if( ( LED_PORT_OUT & LED_1 ) == 0 )
{
LED_PORT_OUT |= LED_1;
}
else
{
LED_PORT_OUT &= ~LED_1;
}
break;
case 1: if( ( LED_PORT_OUT & LED_2 ) == 0 )
{
LED_PORT_OUT |= LED_2;
}
else
{
LED_PORT_OUT &= ~LED_2;
}
break;
}
}
taskEXIT_CRITICAL();
}
/*-----------------------------------------------------------*/

4
Demo/MSP430X_MSP430F5438_IAR/RTOSDemo.ewd
View file

@ -158,7 +158,7 @@
</option>
<option>
<name>EMUVerifyDownloadP7</name>
<state>0</state>
<state>1</state>
</option>
<option>
<name>EraseOptionSlaveP7</name>
@ -240,7 +240,7 @@
</option>
<option>
<name>TargetSettlingtime</name>
<state>0</state>
<state>10</state>
</option>
<option>
<name>AllowAccessToBSL</name>

12
Demo/MSP430X_MSP430F5438_IAR/RTOSDemo.ewp
View file

@ -1910,6 +1910,12 @@
<name>$PROJ_DIR$\MSP-EXP430F5438_HAL\hal_usb.h</name>
</file>
</group>
<group>
<name>Standard_Demo_Tasks</name>
<file>
<name>$PROJ_DIR$\..\Common\Minimal\comtest.c</name>
</file>
</group>
<group>
<name>UserExperienceDemo</name>
<file>
@ -2054,12 +2060,18 @@
<file>
<name>$PROJ_DIR$\main.c</name>
</file>
<file>
<name>$PROJ_DIR$\ParTest.c</name>
</file>
<file>
<name>$PROJ_DIR$\readme.txt</name>
</file>
<file>
<name>$PROJ_DIR$\RegTest.s43</name>
</file>
<file>
<name>$PROJ_DIR$\serial.c</name>
</file>
</project>

4
Demo/MSP430X_MSP430F5438_IAR/lnk430F5438A_mod.xcl
View file

@ -195,9 +195,9 @@
// *** Modified to place code in high memory and insodoing, testing the port.
// Original code
//-P(CODE)CODE=5C00-FF7F,10000-45BFF
-P(CODE)CODE=5C00-FF7F,10000-45BFF
// Modified code
-P(CODE)CODE=10000-45BFF
//-P(CODE)CODE=10000-45BFF
-Z(CODE)CODE_ID
// ---------------------------

5
Demo/MSP430X_MSP430F5438_IAR/low_level_init.c
View file

@ -40,9 +40,10 @@
int __low_level_init(void)
{
/* Insert your low-level initializations here */
_DINT();
WDTCTL = WDTPW+WDTHOLD;
/*
* Return value:
*

137
Demo/MSP430X_MSP430F5438_IAR/main.c
View file

@ -50,15 +50,23 @@
http://www.OpenRTOS.com - Commercial support, development, porting,
licensing and training services.
*/
/* Standard includes. */
#include <stdio.h>
/* FreeRTOS includes. */
#include "FreeRTOS.h"
#include "task.h"
#include "queue.h"
/* Hardware includes. */
#include "msp430.h"
#include "hal_MSP-EXP430F5438.h"
/* Standard demo includes. */
#include "ParTest.h"
#include "comtest2.h"
/* Codes sent within messages to the LCD task so the LCD task can interpret
exactly what the message it just received was. These are sent in the
cMessageID member of the message structure (defined below). */
@ -67,7 +75,7 @@ cMessageID member of the message structure (defined below). */
#define mainMESSAGE_STATUS ( 3 )
/* When the cMessageID member of the message sent to the LCD task is
mainMESSAGE_STATUS then these definitions are sent in the cMessageValue member
mainMESSAGE_STATUS then these definitions are sent in the ulMessageValue member
of the same message and indicate what the status actually is. */
#define mainERROR_DYNAMIC_TASKS ( pdPASS + 1 )
#define mainERROR_COM_TEST ( pdPASS + 2 )
@ -79,6 +87,13 @@ to send messages from tasks and interrupts the the LCD task. */
#define mainQUEUE_LENGTH ( 5 )
#define mainLCD_TASK_PRIORITY ( tskIDLE_PRIORITY + 1 )
#define mainCOM_TEST_PRIORITY ( tskIDLE_PRIORITY + 2 )
/* The LED used by the comtest tasks. See the comtest.c file for more
information. In this case it is deliberately out of range as there are only
two LEDs, and they are both already in use. */
#define mainCOM_TEST_LED ( 3 )
/*-----------------------------------------------------------*/
@ -92,6 +107,7 @@ static void prvGenerateStatusMessage( char *pcBuffer, long lStatusValue );
/*-----------------------------------------------------------*/
volatile unsigned short usRegTest1Counter = 0, usRegTest2Counter = 0;
volatile unsigned long ulStatsOverflowCount = 0;
/* The handle of the queue used to send messages from tasks and interrupts to
the LCD task. */
@ -102,31 +118,34 @@ task. */
typedef struct
{
char cMessageID; /* << States what the message is. */
char cMessageValue; /* << States the message value (can be an integer, string pointer, etc. depending on the value of cMessageID. */
unsigned long ulMessageValue; /* << States the message value (can be an integer, string pointer, etc. depending on the value of cMessageID. */
} xQueueMessage;
/*-----------------------------------------------------------*/
void main( void )
{
prvSetupHardware();
/* Create the queue used by tasks and interrupts to send strings to the LCD
task. */
xLCDQueue = xQueueCreate( mainQUEUE_LENGTH, sizeof( xQueueMessage ) );
if( xLCDQueue != NULL )
{
/* Add the created queue to the queue registry so it can be viewed in
the IAR FreeRTOS state viewer plug-in. */
vQueueAddToRegistry( xLCDQueue, "LCDQueue" );
/* Create the standard demo tasks. */
vAltStartComTestTasks( mainCOM_TEST_PRIORITY, 9600, mainCOM_TEST_LED );
/* Create the terminal IO and button poll tasks, as described at the top
of this file. */
xTaskCreate( prvTerminalIOTask, ( signed char * ) "IO", configMINIMAL_STACK_SIZE, NULL, mainLCD_TASK_PRIORITY, NULL );
xTaskCreate( prvButtonPollTask, ( signed char * ) "ButPoll", configMINIMAL_STACK_SIZE, NULL, tskIDLE_PRIORITY, NULL );
xTaskCreate( prvTerminalIOTask, ( signed char * ) "IO", configMINIMAL_STACK_SIZE * 2, NULL, mainLCD_TASK_PRIORITY, NULL );
xTaskCreate( prvButtonPollTask, ( signed char * ) "BPoll", configMINIMAL_STACK_SIZE, NULL, tskIDLE_PRIORITY, NULL );
xTaskCreate( vRegTest1Task, "RegTest1", configMINIMAL_STACK_SIZE, NULL, 0, NULL );
xTaskCreate( vRegTest2Task, "RegTest2", configMINIMAL_STACK_SIZE, NULL, 0, NULL );
xTaskCreate( vRegTest1Task, "Reg1", configMINIMAL_STACK_SIZE, NULL, 0, NULL );
xTaskCreate( vRegTest2Task, "Reg2", configMINIMAL_STACK_SIZE, NULL, 0, NULL );
vTaskStartScheduler();
}
for( ;; );
@ -169,7 +188,7 @@ static char cBuffer[ 512 ];
informed this task that the up
button on the joystick input has
been pressed or released. */
sprintf( cBuffer, "Button up = %d", xReceivedMessage.cMessageValue );
sprintf( cBuffer, "Button up = %d", ( int ) xReceivedMessage.ulMessageValue );
break;
case mainMESSAGE_BUTTON_SEL : /* The select button interrupt
@ -180,7 +199,8 @@ static char cBuffer[ 512 ];
the terminal IO window in the IAR
embedded workbench. */
printf( "\nTask\t Abs Time\t %%Time\n*****************************************" );
// vTaskGetRunTimeStats( ( signed char * ) cBuffer );
fflush( stdout );
vTaskGetRunTimeStats( ( signed char * ) cBuffer );
// printf( cBuffer );
break;
@ -189,7 +209,7 @@ static char cBuffer[ 512 ];
task of the system status.
Generate a string in accordance
with the status value. */
prvGenerateStatusMessage( cBuffer, xReceivedMessage.cMessageValue );
prvGenerateStatusMessage( cBuffer, xReceivedMessage.ulMessageValue );
break;
default : sprintf( cBuffer, "Unknown message" );
@ -214,7 +234,7 @@ static void prvGenerateStatusMessage( char *pcBuffer, long lStatusValue )
break;
case mainERROR_DYNAMIC_TASKS : sprintf( pcBuffer, "Error: Dynamic tasks" );
break;
case mainERROR_COM_TEST : sprintf( pcBuffer, "Err: loop connected?" ); /* Error in COM test - is the Loopback connector connected? */
case mainERROR_COM_TEST : sprintf( pcBuffer, "Err: COM test" ); /* Error in COM test - is the Loopback connector connected? */
break;
case mainERROR_GEN_QUEUE_TEST : sprintf( pcBuffer, "Error: Gen Q test" );
break;
@ -247,7 +267,7 @@ xQueueMessage xMessage;
{
/* The state has changed, send a message to the LCD task. */
xMessage.cMessageID = mainMESSAGE_BUTTON_UP;
xMessage.cMessageValue = ucState;
xMessage.ulMessageValue = ( unsigned long ) ucState;
ucLastState = ucState;
xQueueSend( xLCDQueue, &xMessage, portMAX_DELAY );
}
@ -261,11 +281,13 @@ xQueueMessage xMessage;
static void prvSetupHardware( void )
{
unsigned long ulCPU_Clock_KHz = ( configCPU_CLOCK_HZ / 1000UL );
halBoardInit();
halButtonsInit( BUTTON_ALL );
halButtonsInterruptEnable( BUTTON_SELECT );
LFXT_Start (XT1DRIVE_0);
Init_FLL_Settle( 18000, 488 );
LFXT_Start( XT1DRIVE_0 );
Init_FLL_Settle( ( unsigned short ) ulCPU_Clock_KHz, 488 );
}
/*-----------------------------------------------------------*/
@ -276,7 +298,7 @@ const unsigned short usACLK_Frequency_Hz = 32768;
/* Ensure the timer is stopped. */
TA0CTL = 0;
/* Run the timer of the ACLK. */
/* Run the timer from the ACLK. */
TA0CTL = TASSEL_1;
/* Clear everything to start with. */
@ -344,26 +366,30 @@ static xQueueMessage xStatusMessage = { mainMESSAGE_STATUS, pdPASS };
xStatusMessage.lMessageValue = mainERROR_DYNAMIC_TASKS;
}
if( xAreComTestTasksStillRunning() != pdPASS )
{
xStatusMessage.lMessageValue = mainERROR_COM_TEST;
}
if( xAreGenericQueueTasksStillRunning() != pdPASS )
{
xStatusMessage.lMessageValue = mainERROR_GEN_QUEUE_TEST;
}
#else
/* See if the standard demo tasks are executing as expected, changing
the message that is sent to the LCD task from PASS to an error code if
any tasks set reports an error. */
if( xAreComTestTasksStillRunning() != pdPASS )
{
xStatusMessage.ulMessageValue = mainERROR_COM_TEST;
}
/* Check the reg test tasks are still cycling. They will stop incrementing
their loop counters if they encounter an error. */
if( usRegTest1Counter == usLastRegTest1Counter )
{
xStatusMessage.cMessageValue = mainERROR_REG_TEST;
xStatusMessage.ulMessageValue = mainERROR_REG_TEST;
}
if( usRegTest2Counter == usLastRegTest2Counter )
{
xStatusMessage.cMessageValue = mainERROR_REG_TEST;
xStatusMessage.ulMessageValue = mainERROR_REG_TEST;
}
usLastRegTest1Counter = usRegTest1Counter;
@ -391,5 +417,70 @@ static xQueueMessage xStatusMessage = { mainMESSAGE_STATUS, pdPASS };
}
}
}
/*-----------------------------------------------------------*/
#pragma vector=PORT2_VECTOR
__interrupt static void prvSelectButtonInterrupt(void)
{
/* Define the message sent to the LCD task from this interrupt. */
static const xQueueMessage xMessage = { mainMESSAGE_BUTTON_SEL, ( unsigned long ) "Select Interrupt!" };
portBASE_TYPE xHigherPriorityTaskWoken = pdFALSE;
/* This is the interrupt handler for the joystick select button input.
The button has been pushed, write a message to the LCD via the LCD task. */
xQueueSendFromISR( xLCDQueue, &xMessage, &xHigherPriorityTaskWoken );
P2IFG = 0;
/* If writing to xLCDQueue caused a task to unblock, and the unblocked task
has a priority equal to or above the task that this interrupt interrupted,
then lHigherPriorityTaskWoken will have been set to pdTRUE internally within
xQueuesendFromISR(), and portEND_SWITCHING_ISR() will ensure that this
interrupt returns directly to the higher priority unblocked task. */
portYIELD_FROM_ISR( xHigherPriorityTaskWoken );
}
/*-----------------------------------------------------------*/
void vConfigureTimerForRunTimeStats( void )
{
/* Ensure the timer is stopped. */
TA1CTL = 0;
/* Run the timer from the ACLK/4. */
TA1CTL = TASSEL_1 | ID__4;
/* Clear everything to start with. */
TA1CTL |= TACLR;
/* Enable the interrupts. */
TA1CCTL0 = CCIE;
/* Start up clean. */
TA1CTL |= TACLR;
/* Continuous mode. */
TA1CTL |= MC__CONTINOUS;
}
/*-----------------------------------------------------------*/
#pragma vector=TIMER1_A0_VECTOR
static __interrupt void prvRunTimeStatsOverflowISR( void )
{
ulStatsOverflowCount++;
}
/*-----------------------------------------------------------*/
inline unsigned long ulGetRunTimeStatsTime( void )
{
unsigned long ulReturn;
TA1CTL &= ~MC__CONTINOUS;
ulReturn = ( ( ulStatsOverflowCount << 16UL ) | ( unsigned long ) TA1R );
TA1CTL |= MC__CONTINOUS;
return ulReturn;
}

240
Demo/MSP430X_MSP430F5438_IAR/serial.c Normal file
View file

@ -0,0 +1,240 @@
/*
FreeRTOS V6.1.0 - Copyright (C) 2010 Real Time Engineers Ltd.
***************************************************************************
* *
* If you are: *
* *
* + New to FreeRTOS, *
* + Wanting to learn FreeRTOS or multitasking in general quickly *
* + Looking for basic training, *
* + Wanting to improve your FreeRTOS skills and productivity *
* *
* then take a look at the FreeRTOS books - available as PDF or paperback *
* *
* "Using the FreeRTOS Real Time Kernel - a Practical Guide" *
* http://www.FreeRTOS.org/Documentation *
* *
* A pdf reference manual is also available. Both are usually delivered *
* to your inbox within 20 minutes to two hours when purchased between 8am *
* and 8pm GMT (although please allow up to 24 hours in case of *
* exceptional circumstances). Thank you for your support! *
* *
***************************************************************************
This file is part of the FreeRTOS distribution.
FreeRTOS is free software; you can redistribute it and/or modify it under
the terms of the GNU General Public License (version 2) as published by the
Free Software Foundation AND MODIFIED BY the FreeRTOS exception.
***NOTE*** The exception to the GPL is included to allow you to distribute
a combined work that includes FreeRTOS without being obliged to provide the
source code for proprietary components outside of the FreeRTOS kernel.
FreeRTOS is distributed in the hope that it will be useful, but WITHOUT
ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
more details. You should have received a copy of the GNU General Public
License and the FreeRTOS license exception along with FreeRTOS; if not it
can be viewed here: http://www.freertos.org/a00114.html and also obtained
by writing to Richard Barry, contact details for whom are available on the
FreeRTOS WEB site.
1 tab == 4 spaces!
http://www.FreeRTOS.org - Documentation, latest information, license and
contact details.
http://www.SafeRTOS.com - A version that is certified for use in safety
critical systems.
http://www.OpenRTOS.com - Commercial support, development, porting,
licensing and training services.
*/
/* BASIC INTERRUPT DRIVEN SERIAL PORT DRIVER.
*
* This file only supports UART A0 in loopback mode, and has not been tested
* for real UART operation (only loopback mode) so is not guaranteed to have
* a correct baud rate configuration.
*/
/* Standard includes. */
#include <stdlib.h>
/* Scheduler includes. */
#include "FreeRTOS.h"
#include "queue.h"
#include "task.h"
/* Demo application includes. */
#include "serial.h"
/* HAL includes. */
#include "hal_usb.h"
/* Constants required to setup the hardware. */
#define serTX_AND_RX ( ( unsigned portCHAR ) 0x03 )
/* Misc. constants. */
#define serNO_BLOCK ( ( portTickType ) 0 )
/* The queue used to hold received characters. */
static xQueueHandle xRxedChars;
/* The queue used to hold characters waiting transmission. */
static xQueueHandle xCharsForTx;
/*-----------------------------------------------------------*/
xComPortHandle xSerialPortInitMinimal( unsigned portLONG ulWantedBaud, unsigned portBASE_TYPE uxQueueLength )
{
unsigned portLONG ulBaudRateCount;
/* Initialise the hardware. */
/* Generate the baud rate constants for the wanted baud rate. */
ulBaudRateCount = configCPU_CLOCK_HZ / ulWantedBaud;
portENTER_CRITICAL();
{
/* Create the queues used by the com test task. */
xRxedChars = xQueueCreate( uxQueueLength, ( unsigned portBASE_TYPE ) sizeof( signed portCHAR ) );
xCharsForTx = xQueueCreate( uxQueueLength, ( unsigned portBASE_TYPE ) sizeof( signed portCHAR ) );
#if 0
/* Reset UART. */
UCA0CTL1 |= UCSWRST;
/* Use SMCLK. */
UCA0CTL1 = UCSSEL0 | UCSSEL1;
/* Setup baud rate low byte. */
UCA0BR0 = ( unsigned portCHAR ) ( ulBaudRateCount & ( unsigned portLONG ) 0xff );
/* Setup baud rate high byte. */
ulBaudRateCount >>= 8UL;
UCA0BR1 = ( unsigned portCHAR ) ( ulBaudRateCount & ( unsigned portLONG ) 0xff );
/* UCLISTEN sets loopback mode! */
UCA0STAT = UCLISTEN;
/* Clear interrupts. */
// UCA0IFG = 0;
/* Enable interrupts. */
UCA0IE |= UCRXIE;
/* Take out of reset. */
UCA0CTL1 &= ~UCSWRST;
#else
USB_PORT_SEL |= USB_PIN_RXD + USB_PIN_TXD;
USB_PORT_DIR |= USB_PIN_TXD;
USB_PORT_DIR &= ~USB_PIN_RXD;
UCA1CTL1 |= UCSWRST; //Reset State
UCA1CTL0 = UCMODE_0;
UCA1CTL0 &= ~UC7BIT; // 8bit char
UCA1CTL1 |= UCSSEL_2;
// UCA1BR0 = 16; // 8Mhz/57600=138
// UCA1BR1 = 1;
/* Setup baud rate low byte. */
UCA0BR0 = ( unsigned portCHAR ) ( ulBaudRateCount & ( unsigned portLONG ) 0xff );
/* Setup baud rate high byte. */
ulBaudRateCount >>= 8UL;
UCA0BR1 = ( unsigned portCHAR ) ( ulBaudRateCount & ( unsigned portLONG ) 0xff );
UCA1MCTL = 0xE;
UCA1CTL1 &= ~UCSWRST;
UCA1IE |= UCRXIE;
#endif
}
portEXIT_CRITICAL();
/* Unlike other ports, this serial code does not allow for more than one
com port. We therefore don't return a pointer to a port structure and can
instead just return NULL. */
return NULL;
}
/*-----------------------------------------------------------*/
signed portBASE_TYPE xSerialGetChar( xComPortHandle pxPort, signed portCHAR *pcRxedChar, portTickType xBlockTime )
{
/* Get the next character from the buffer. Return false if no characters
are available, or arrive before xBlockTime expires. */
if( xQueueReceive( xRxedChars, pcRxedChar, xBlockTime ) )
{
return pdTRUE;
}
else
{
return pdFALSE;
}
}
/*-----------------------------------------------------------*/
signed portBASE_TYPE xSerialPutChar( xComPortHandle pxPort, signed portCHAR cOutChar, portTickType xBlockTime )
{
signed portBASE_TYPE xReturn;
xReturn = xQueueSend( xCharsForTx, &cOutChar, xBlockTime );
UCA0IE |= UCTXIE;
return xReturn;
}
/*-----------------------------------------------------------*/
char cTxedBytes[ 512 ];
char cRxedBytes[ 512 ];
volatile int xIndex = 0;
volatile int xIndex2 = 0;
#pragma vector=USCI_A0_VECTOR
static __interrupt void prvUSCI_A0_ISR( void )
{
signed portCHAR cChar;
portBASE_TYPE xTaskWoken = pdFALSE;
portBASE_TYPE xHigherPriorityTaskWoken = pdFALSE;
while( UCA0IFG & UCRXIFG )
{
/* Get the character from the UART and post it on the queue of Rxed
characters. */
cChar = UCA0RXBUF;
if( xIndex2 < 500 )
{
cRxedBytes[ xIndex2++ ] = cChar;
}
xQueueSendFromISR( xRxedChars, &cChar, &xHigherPriorityTaskWoken );
}
if( UCA0IFG & UCTXIFG )
{
/* The previous character has been transmitted. See if there are any
further characters waiting transmission. */
if( xQueueReceiveFromISR( xCharsForTx, &cChar, &xTaskWoken ) == pdTRUE )
{
if( xIndex < 500 )
{
cTxedBytes[ xIndex++ ] = cChar;
}
/* There was another character queued - transmit it now. */
UCA0TXBUF = cChar;
}
else
{
/* There were no other characters to transmit - disable the Tx
interrupt. */
UCA0IE &= ~UCTXIE;
}
}
__bic_SR_register_on_exit( SCG1 + SCG0 + OSCOFF + CPUOFF );
portYIELD_FROM_ISR( xHigherPriorityTaskWoken );
}