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Alfred Gedeon 2020-07-01 22:27:40 -07:00 • committed by alfred gedeon
parent a5dbc2b1de
commit 718178c68a
406 changed files with 108795 additions and 106323 deletions
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158
portable/WizC/PIC18/Drivers/Tick/Tick.c
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@ -24,51 +24,51 @@
*
*/
/*
Changes from V3.0.0
+ ISRcode is pulled inline and portTICKisr() is therefore
deleted from this file.
+ Prescaler logic for Timer1 added to allow for a wider
range of TickRates.
Changes from V3.0.1
*/
/*
* Changes from V3.0.0
+ ISRcode is pulled inline and portTICKisr() is therefore
+ deleted from this file.
+
+ Prescaler logic for Timer1 added to allow for a wider
+ range of TickRates.
+
+ Changes from V3.0.1
*/
#include <FreeRTOS.h>
#include <task.h>
/* IO port constants. */
#define portBIT_SET (1)
#define portBIT_CLEAR (0)
#define portBIT_SET ( 1 )
#define portBIT_CLEAR ( 0 )
/*
/*
* Hardware setup for the tick.
* We use a compare match on timer1. Depending on MPU-frequency
* and requested tickrate, a prescaled value with a matching
* prescaler are determined.
*/
#define portTIMER_COMPARE_BASE ((APROCFREQ/4)/configTICK_RATE_HZ)
#define portTIMER_COMPARE_BASE ( ( APROCFREQ / 4 ) / configTICK_RATE_HZ )
#if portTIMER_COMPARE_BASE < 0x10000
#define portTIMER_COMPARE_VALUE (portTIMER_COMPARE_BASE)
#define portTIMER_COMPARE_PS1 (portBIT_CLEAR)
#define portTIMER_COMPARE_PS0 (portBIT_CLEAR)
#if portTIMER_COMPARE_BASE < 0x10000
#define portTIMER_COMPARE_VALUE ( portTIMER_COMPARE_BASE )
#define portTIMER_COMPARE_PS1 ( portBIT_CLEAR )
#define portTIMER_COMPARE_PS0 ( portBIT_CLEAR )
#elif portTIMER_COMPARE_BASE < 0x20000
#define portTIMER_COMPARE_VALUE (portTIMER_COMPARE_BASE / 2)
#define portTIMER_COMPARE_PS1 (portBIT_CLEAR)
#define portTIMER_COMPARE_PS0 (portBIT_SET)
#define portTIMER_COMPARE_VALUE ( portTIMER_COMPARE_BASE / 2 )
#define portTIMER_COMPARE_PS1 ( portBIT_CLEAR )
#define portTIMER_COMPARE_PS0 ( portBIT_SET )
#elif portTIMER_COMPARE_BASE < 0x40000
#define portTIMER_COMPARE_VALUE (portTIMER_COMPARE_BASE / 4)
#define portTIMER_COMPARE_PS1 (portBIT_SET)
#define portTIMER_COMPARE_PS0 (portBIT_CLEAR)
#define portTIMER_COMPARE_VALUE ( portTIMER_COMPARE_BASE / 4 )
#define portTIMER_COMPARE_PS1 ( portBIT_SET )
#define portTIMER_COMPARE_PS0 ( portBIT_CLEAR )
#elif portTIMER_COMPARE_BASE < 0x80000
#define portTIMER_COMPARE_VALUE (portTIMER_COMPARE_BASE / 8)
#define portTIMER_COMPARE_PS1 (portBIT_SET)
#define portTIMER_COMPARE_PS0 (portBIT_SET)
#else
#error "TickRate out of range"
#endif
#define portTIMER_COMPARE_VALUE ( portTIMER_COMPARE_BASE / 8 )
#define portTIMER_COMPARE_PS1 ( portBIT_SET )
#define portTIMER_COMPARE_PS0 ( portBIT_SET )
#else /* if portTIMER_COMPARE_BASE < 0x10000 */
#error "TickRate out of range"
#endif /* if portTIMER_COMPARE_BASE < 0x10000 */
/*-----------------------------------------------------------*/
@ -77,61 +77,61 @@ Changes from V3.0.1
*/
void portSetupTick( void )
{
/*
* Interrupts are disabled when this function is called.
*/
/*
* Interrupts are disabled when this function is called.
*/
/*
* Setup CCP1
* Provide the tick interrupt using a compare match on timer1.
*/
/*
* Setup CCP1
* Provide the tick interrupt using a compare match on timer1.
*/
/*
* Set the compare match value.
*/
CCPR1H = ( uint8_t ) ( ( portTIMER_COMPARE_VALUE >> 8 ) & 0xff );
CCPR1L = ( uint8_t ) ( portTIMER_COMPARE_VALUE & 0xff );
/*
* Set the compare match value.
*/
CCPR1H = ( uint8_t ) ( ( portTIMER_COMPARE_VALUE >> 8 ) & 0xff );
CCPR1L = ( uint8_t ) ( portTIMER_COMPARE_VALUE & 0xff );
/*
* Set Compare Special Event Trigger Mode
*/
bCCP1M3 = portBIT_SET;
bCCP1M2 = portBIT_CLEAR;
bCCP1M1 = portBIT_SET;
bCCP1M0 = portBIT_SET;
/*
* Set Compare Special Event Trigger Mode
*/
bCCP1M3 = portBIT_SET;
bCCP1M2 = portBIT_CLEAR;
bCCP1M1 = portBIT_SET;
bCCP1M0 = portBIT_SET;
/*
* Enable CCP1 interrupt
*/
bCCP1IE = portBIT_SET;
/*
* Enable CCP1 interrupt
*/
bCCP1IE = portBIT_SET;
/*
* We are only going to use the global interrupt bit, so disable
* interruptpriorities and enable peripheral interrupts.
*/
bIPEN = portBIT_CLEAR;
bPEIE = portBIT_SET;
/*
* We are only going to use the global interrupt bit, so disable
* interruptpriorities and enable peripheral interrupts.
*/
bIPEN = portBIT_CLEAR;
bPEIE = portBIT_SET;
/*
* Set up timer1
* It will produce the system tick.
*/
/*
* Set up timer1
* It will produce the system tick.
*/
/*
* Clear the time count
*/
TMR1H = ( uint8_t ) 0x00;
TMR1L = ( uint8_t ) 0x00;
/*
* Clear the time count
*/
TMR1H = ( uint8_t ) 0x00;
TMR1L = ( uint8_t ) 0x00;
/*
* Setup the timer
*/
bRD16 = portBIT_SET; // 16-bit
bT1CKPS1 = portTIMER_COMPARE_PS1; // prescaler
bT1CKPS0 = portTIMER_COMPARE_PS0; // prescaler
bT1OSCEN = portBIT_SET; // Oscillator enable
bT1SYNC = portBIT_SET; // No external clock sync
bTMR1CS = portBIT_CLEAR; // Internal clock
bTMR1ON = portBIT_SET; // Start timer1
/*
* Setup the timer
*/
bRD16 = portBIT_SET; /* 16-bit */
bT1CKPS1 = portTIMER_COMPARE_PS1; /* prescaler */
bT1CKPS0 = portTIMER_COMPARE_PS0; /* prescaler */
bT1OSCEN = portBIT_SET; /* Oscillator enable */
bT1SYNC = portBIT_SET; /* No external clock sync */
bTMR1CS = portBIT_CLEAR; /* Internal clock */
bTMR1ON = portBIT_SET; /* Start timer1 */
}