This commit is contained in:
midelic 2016-08-27 09:00:07 +01:00 committed by GitHub
parent 58558f2f9c
commit c2f5a6172f

View File

@ -822,7 +822,7 @@ static void module_reset()
} }
} }
} }
/* #ifndef STM32_board
int16_t map( int16_t x, int16_t in_min, int16_t in_max, int16_t out_min, int16_t out_max) int16_t map( int16_t x, int16_t in_min, int16_t in_max, int16_t out_min, int16_t out_max)
{ {
// return (x - in_min) * (out_max - out_min) / (in_max - in_min) + out_min; // return (x - in_min) * (out_max - out_min) / (in_max - in_min) + out_min;
@ -833,7 +833,7 @@ int16_t map( int16_t x, int16_t in_min, int16_t in_max, int16_t out_min, int16_t
x = y / (in_max - in_min) ; x = y / (in_max - in_min) ;
return x + out_min ; return x + out_min ;
} }
*/ #endif
// Channel value is converted to 8bit values full scale // Channel value is converted to 8bit values full scale
uint8_t convert_channel_8b(uint8_t num) uint8_t convert_channel_8b(uint8_t num)
{ {
@ -1050,6 +1050,118 @@ static void set_rx_tx_addr(uint32_t id)
#endif #endif
#ifndef STM32_board
/************************************/
/** Arduino replacement routines **/
/************************************/
// replacement millis() and micros()
// These work polled, no interrupts
// micros() MUST be called at least once every 32 milliseconds
uint16_t MillisPrecount ;
uint16_t lastTimerValue ;
uint32_t TotalMicros ;
uint32_t TotalMillis ;
uint8_t Correction ;
uint32_t micros()
{
uint16_t elapsed ;
uint8_t millisToAdd ;
uint8_t oldSREG = SREG ;
cli() ;
uint16_t time = TCNT1 ; // Read timer 1
SREG = oldSREG ;
elapsed = time - lastTimerValue ;
elapsed += Correction ;
Correction = elapsed & 0x01 ;
elapsed >>= 1 ;
uint32_t ltime = TotalMicros ;
ltime += elapsed ;
cli() ;
TotalMicros = ltime ; // Done this way for RPM to work correctly
lastTimerValue = time ;
SREG = oldSREG ; // Still valid from above
elapsed += MillisPrecount;
millisToAdd = 0 ;
if ( elapsed > 15999 )
{
millisToAdd = 16 ;
elapsed -= 16000 ;
}
if ( elapsed > 7999 )
{
millisToAdd += 8 ;
elapsed -= 8000 ;
}
if ( elapsed > 3999 )
{
millisToAdd += 4 ;
elapsed -= 4000 ;
}
if ( elapsed > 1999 )
{
millisToAdd += 2 ;
elapsed -= 2000 ;
}
if ( elapsed > 999 )
{
millisToAdd += 1 ;
elapsed -= 1000 ;
}
TotalMillis += millisToAdd ;
MillisPrecount = elapsed ;
return TotalMicros ;
}
uint32_t millis()
{
micros() ;
return TotalMillis ;
}
void delayMilliseconds(unsigned long ms)
{
uint16_t start = (uint16_t)micros();
uint16_t lms = ms ;
while (lms > 0) {
if (((uint16_t)micros() - start) >= 1000) {
lms--;
start += 1000;
}
}
}
/* Important notes:
- Max value is 16000µs
- delay is not accurate due to interrupts happening */
void delayMicroseconds(unsigned int us)
{
if (--us == 0)
return;
us <<= 2; // * 4
us -= 2; // - 2
__asm__ __volatile__ (
"1: sbiw %0,1" "\n\t" // 2 cycles
"brne 1b" : "=w" (us) : "0" (us) // 2 cycles
);
}
void init()
{
// this needs to be called before setup() or some functions won't work there
sei();
}
#endif
/**************************/ /**************************/
/**************************/ /**************************/
/** Interrupt routines **/ /** Interrupt routines **/