Comments (4)
PaulStoffregen
commented on August 18, 2024
Looks like this was fixed long ago.
// Mighty-1284 - Maniacbug
//
#elif defined(__AVR_ATmega1284P__)
#define TIMER1_A_PIN 12 // PD5
#define TIMER1_B_PIN 13 // PD4
#define TIMER1_ICP_PIN 14 // PD6
#define TIMER1_CLK_PIN 1 // PB1
#define TIMER3_A_PIN 6 // PB6
#define TIMER3_B_PIN 7 // PB7
#define TIMER3_ICP_PIN 5 // PB5
#define TIMER3_CLK_PIN 8 // PD0
I'm closing this old issue. If there's still a problem, please reopen and explain...
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MadGarra
commented on August 18, 2024
Sorry, but it is not fixed. According to ATmega164A/164PA/324A/324PA/644A/644PA/1284/1284P datashhet (Section 1.1 - Pinout - PDIP...),
OC1A - PD5 port is assigned to PIN19 = Maniacbug D 13
OC1B - PD4 port is assigned to PIN18 = Maniacbug D 12
ManiacBug PIN mapping
+---\/---+
(D 0) PB0 1| |40 PA0 (AI 0 / D24)
(D 1) PB1 2| |39 PA1 (AI 1 / D25)
INT2 (D 2) PB2 3| |38 PA2 (AI 2 / D26)
PWM (D 3) PB3 4| |37 PA3 (AI 3 / D27)
PWM/SS (D 4) PB4 5| |36 PA4 (AI 4 / D28)
MOSI (D 5) PB5 6| |35 PA5 (AI 5 / D29)
PWM/MISO (D 6) PB6 7| |34 PA6 (AI 6 / D30)
PWM/SCK (D 7) PB7 8| |33 PA7 (AI 7 / D31)
RST 9| |32 AREF
VCC 10| |31 GND
GND 11| |30 AVCC
XTAL2 12| |29 PC7 (D 23)
XTAL1 13| |28 PC6 (D 22)
RX0 (D 8) PD0 14| |27 PC5 (D 21) TDI
TX0 (D 9) PD1 15| |26 PC4 (D 20) TDO
RX1/INT0 (D 10) PD2 16| |25 PC3 (D 19) TMS
TX1/INT1 (D 11) PD3 17| |24 PC2 (D 18) TCK
PWM (D 12) PD4 18| |23 PC1 (D 17) SDA
PWM (D 13) PD5 19| |22 PC0 (D 16) SCL
PWM (D 14) PD6 20| |21 PD7 (D 15) PWM
+--------+
Therefore, the code should be changed from
#elif defined(__AVR_ATmega1284P__)
#define TIMER1_A_PIN 12 // PD5
#define TIMER1_B_PIN 13 // PD4
#define TIMER1_ICP_PIN 14 // PD6
to
#elif defined(__AVR_ATmega1284P__)
#define TIMER1_A_PIN 13 // PD5
#define TIMER1_B_PIN 12 // PD4
#define TIMER1_ICP_PIN 14 // PD6
from timerone.
vdesmedt
commented on August 18, 2024
I confirm the problem is not solved.
This code :
void setup() { //Timer1.initialize(1000); //Timer1.attachInterrupt(timerIsr); analogWrite(P_FAN_PWM, 128); }
Produces correct result
while this code
void setup() { Timer1.initialize(1000); Timer1.attachInterrupt(timerIsr); analogWrite(P_FAN_PWM, 128); }
Creates a very thin spike instead of the square wave the above code produces
from timerone.
eeproto
commented on August 18, 2024
I just ran into the same issue. Things work fine on the ATmega1284 when you modify known_16bit_timers.h to read:
// Mighty-1284 - Maniacbug
//
#elif defined(__AVR_ATmega1284P__) || defined(__AVR_ATmega1284__)
#define TIMER1_A_PIN 13 // PD5
#define TIMER1_B_PIN 12 // PD4
#define TIMER1_ICP_PIN 14 // PD6
#define TIMER1_CLK_PIN 1 // PB1
#define TIMER3_A_PIN 6 // PB6
#define TIMER3_B_PIN 7 // PB7
#define TIMER3_ICP_PIN 5 // PB5
#define TIMER3_CLK_PIN 8 // PD0
#endifThis also enables TimerOne to run on a non-P ATmega1284. Tested with an ATmega1284-MU.
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