fixed TIMER4 use on Leonardo
ATMEGA32U4 has major differences in TIMER4 registers compared to ATMEGA1280 and 2560. turnOffPWM, analogWrite, and initialize routines had wrong registers, bit names, etc.
This commit is contained in:
Zach Eveland
parent
a9d1368e4c
commit
c58fcf5554
30
boards.txt
30
boards.txt
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@ -144,21 +144,21 @@ mega.build.variant=mega
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##############################################################
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#leonardo.name=Arduino Leonardo
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#leonardo.upload.protocol=arduino
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#leonardo.upload.maximum_size=28672
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#leonardo.upload.speed=1200
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#leonardo.bootloader.low_fuses=0xde
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#leonardo.bootloader.high_fuses=0xd8
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#leonardo.bootloader.extended_fuses=0xcb
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#leonardo.bootloader.path=diskloader
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#leonardo.bootloader.file=DiskLoader-Leonardo.hex
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#leonardo.bootloader.unlock_bits=0x3F
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#leonardo.bootloader.lock_bits=0x2F
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#leonardo.build.mcu=atmega32u4
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#leonardo.build.f_cpu=16000000L
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#leonardo.build.core=arduino
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#leonardo.build.variant=leonardo
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leonardo.name=Arduino Leonardo
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leonardo.upload.protocol=arduino
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leonardo.upload.maximum_size=28672
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leonardo.upload.speed=1200
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leonardo.bootloader.low_fuses=0xde
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leonardo.bootloader.high_fuses=0xd8
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leonardo.bootloader.extended_fuses=0xcb
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leonardo.bootloader.path=diskloader
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leonardo.bootloader.file=DiskLoader-Leonardo.hex
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leonardo.bootloader.unlock_bits=0x3F
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leonardo.bootloader.lock_bits=0x2F
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leonardo.build.mcu=atmega32u4
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leonardo.build.f_cpu=16000000L
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leonardo.build.core=arduino
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leonardo.build.variant=leonardo
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##############################################################
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@ -278,12 +278,21 @@ void init()
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sbi(TCCR3B, CS30);
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sbi(TCCR3A, WGM30); // put timer 3 in 8-bit phase correct pwm mode
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#endif
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#if defined(TCCR4A) && defined(TCCR4B) && defined(TCCR4D) /* beginning of timer4 block for 32U4 and similar */
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sbi(TCCR4A, COM4A1); // clear channel A on output compare match
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sbi(TCCR4C, COM4D1); // clear channel D on output compare match
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sbi(TCCR4B, CS42); // set timer4 prescale factor to 64
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sbi(TCCR4B, CS41);
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sbi(TCCR4B, CS40);
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sbi(TCCR4D, WGM40); // put timer 4 in phase- and frequency-correct PWM mode
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#else /* beginning of timer4 block for ATMEGA1280 and ATMEGA2560 */
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#if defined(TCCR4B) && defined(CS41) && defined(WGM40)
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sbi(TCCR4B, CS41); // set timer 4 prescale factor to 64
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sbi(TCCR4B, CS40);
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sbi(TCCR4A, WGM40); // put timer 4 in 8-bit phase correct pwm mode
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#endif
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#endif /* end timer4 block for ATMEGA1280/2560 and similar */
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#if defined(TCCR5B) && defined(CS51) && defined(WGM50)
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sbi(TCCR5B, CS51); // set timer 5 prescale factor to 64
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@ -204,14 +204,18 @@ void analogWrite(uint8_t pin, int val)
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break;
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#endif
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#if defined(TCCR4A) && defined(COM4A1)
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#if defined(TCCR4A)
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case TIMER4A:
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// connect pwm to pin on timer 4, channel A
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//connect pwm to pin on timer 4, channel A
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#if defined(PWM4A) /* ATMEGA32U4 and related */
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sbi(TCCR4A, PWM4A);
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#elif defined(COM4A1) /* ATMEGA1280/2560 and related */
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sbi(TCCR4A, COM4A1);
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OCR4A = val; // set pwm duty
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#endif
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OCR4A = val; // set pwm duty
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break;
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#endif
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#if defined(TCCR4A) && defined(COM4B1)
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case TIMER4B:
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// connect pwm to pin on timer 4, channel B
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@ -228,14 +232,17 @@ void analogWrite(uint8_t pin, int val)
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break;
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#endif
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#if defined(TCCR4A) && defined(COM4D1)
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case TIMER4D:
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#if defined(TCCR4C)
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case TIMER4D:
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// connect pwm to pin on timer 4, channel D
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sbi(TCCR4A, COM4D1);
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OCR4D = val; // set pwm duty
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#if defined(PWM4D) /* ATMEGA32U4 and related */
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sbi(TCCR4C, PWM4D);
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#endif
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OCR4D = val; // set pwm duty
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break;
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#endif
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#if defined(TCCR5A) && defined(COM5A1)
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case TIMER5A:
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// connect pwm to pin on timer 5, channel A
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@ -270,3 +277,4 @@ void analogWrite(uint8_t pin, int val)
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}
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}
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}
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@ -105,15 +105,31 @@ static void turnOffPWM(uint8_t timer)
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case TIMER3C: cbi(TCCR3A, COM3C1); break;
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#endif
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#if defined(TCCR4A) && defined(COM4A1)
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case TIMER4A: cbi(TCCR4A, COM4A1); break;
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#endif
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#if defined(TCCR4A)
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case TIMER4A:
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#if defined(PWM4A)
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cbi(TCCR4A, PWM4A);
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#elif defined(COM4A1)
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cbi(TCCR4A, COM4A1);
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#endif
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break;
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#endif
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#if defined(TCCR4A) && defined(COM4B1)
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case TIMER4B: cbi(TCCR4A, COM4B1); break;
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#endif
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#if defined(TCCR4A) && defined(COM4C1)
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case TIMER4C: cbi(TCCR4A, COM4C1); break;
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#endif
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#if defined(TCCR4C)
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case TIMER4D:
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#if defined(PWM4D)
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cbi(TCCR4C, PWM4D);
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#endif
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break;
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#endif
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#if defined(TCCR5A)
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case TIMER5A: cbi(TCCR5A, COM5A1); break;
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case TIMER5B: cbi(TCCR5A, COM5B1); break;
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@ -212,7 +212,7 @@ const uint8_t PROGMEM digital_pin_to_bit_mask_PGM[30] = {
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_BV(6), // D29 / D12 - A11 - PD6
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};
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const uint8_t PROGMEM digital_pin_to_timer_PGM[18] = {
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const uint8_t PROGMEM digital_pin_to_timer_PGM[16] = {
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NOT_ON_TIMER,
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NOT_ON_TIMER,
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NOT_ON_TIMER,
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