Помогите сваять генератор

[Wiza_]

Прерывание таймера называется TIMER1_OVF или TIM1_OVF
sei() должен быть включен
TIFR1 трогать не обязательно

[omercury]

Прерывание таймера называется TIMER1_OVF или TIM1_OVF

На самом деле для winavr прерывание называется так

ISR (TIM1_OVF_vect)
{
}

Между фигурными скобками вставьте свой код.

[-vitalik-]

Чуть порылся в интернете, правильное обьявление: ISR(TIMER1_OVF_vect)
Вот здесь. если кому интересно, описаны новые названия векторов прерываний: http://www.nongnu.org/avr-libc/user-...nterrupts.html

[-vitalik-]

и так, борьба с неправильной работой генератора продолжается:
Сначала создал масивы сигналов и запихнул их в память програм

//define signal
const uint8_t Sinewave[] PROGMEM= //sine 256 values
{
0x80,0x83,0x86,0x89,0x8c,0x8f,0x92,0x95,0x98,0x9c, 0x9f,0xa2,0xa5,0xa8,0xab,0xae,
0xb0,0xb3,0xb6,0xb9,0xbc,0xbf,0xc1,0xc4,0xc7,0xc9, 0xcc,0xce,0xd1,0xd3,0xd5,0xd8,
0xda,0xdc,0xde,0xe0,0xe2,0xe4,0xe6,0xe8,0xea,0xec, 0xed,0xef,0xf0,0xf2,0xf3,0xf5,
0xf6,0xf7,0xf8,0xf9,0xfa,0xfb,0xfc,0xfc,0xfd,0xfe, 0xfe,0xff,0xff,0xff,0xff,0xff,
0xff,0xff,0xff,0xff,0xff,0xff,0xfe,0xfe,0xfd,0xfc, 0xfc,0xfb,0xfa,0xf9,0xf8,0xf7,
0xf6,0xf5,0xf3,0xf2,0xf0,0xef,0xed,0xec,0xea,0xe8, 0xe6,0xe4,0xe2,0xe0,0xde,0xdc,
0xda,0xd8,0xd5,0xd3,0xd1,0xce,0xcc,0xc9,0xc7,0xc4, 0xc1,0xbf,0xbc,0xb9,0xb6,0xb3,
0xb0,0xae,0xab,0xa8,0xa5,0xa2,0x9f,0x9c,0x98,0x95, 0x92,0x8f,0x8c,0x89,0x86,0x83,
0x80,0x7c,0x79,0x76,0x73,0x70,0x6d,0x6a,0x67,0x63, 0x60,0x5d,0x5a,0x57,0x54,0x51,
0x4f,0x4c,0x49,0x46,0x43,0x40,0x3e,0x3b,0x38,0x36, 0x33,0x31,0x2e,0x2c,0x2a,0x27,
0x25,0x23,0x21,0x1f,0x1d,0x1b,0x19,0x17,0x15,0x13, 0x12,0x10,0x0f,0x0d,0x0c,0x0a,
0x09,0x08,0x07,0x06,0x05,0x04,0x03,0x03,0x02,0x01, 0x01,0x00,0x00,0x00,0x00,0x00,
0x00,0x00,0x00,0x00,0x00,0x00,0x01,0x01,0x02,0x03, 0x03,0x04,0x05,0x06,0x07,0x08,
0x09,0x0a,0x0c,0x0d,0x0f,0x10,0x12,0x13,0x15,0x17, 0x19,0x1b,0x1d,0x1f,0x21,0x23,
0x25,0x27,0x2a,0x2c,0x2e,0x31,0x33,0x36,0x38,0x3b, 0x3e,0x40,0x43,0x46,0x49,0x4c,
0x4f,0x51,0x54,0x57,0x5a,0x5d,0x60,0x63,0x67,0x6a, 0x6d,0x70,0x73,0x76,0x79,0x7c
};

const uint8_t Meandr[] PROGMEM= //Meandr 256 values
{
0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00, 0x00,0x00,0x00,0x00,0x00,0x00,
0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00, 0x00,0x00,0x00,0x00,0x00,0x00,
0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00, 0x00,0x00,0x00,0x00,0x00,0x00,
0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00, 0x00,0x00,0x00,0x00,0x00,0x00,
0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00, 0x00,0x00,0x00,0x00,0x00,0x00,
0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00, 0x00,0x00,0x00,0x00,0x00,0x00,
0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00, 0x00,0x00,0x00,0x00,0x00,0x00,
0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00, 0x00,0x00,0x00,0x00,0x00,0x00,
0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff, 0xff,0xff,0xff,0xff,0xff,0xff,
0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff, 0xff,0xff,0xff,0xff,0xff,0xff,
0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff, 0xff,0xff,0xff,0xff,0xff,0xff,
0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff, 0xff,0xff,0xff,0xff,0xff,0xff,
0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff, 0xff,0xff,0xff,0xff,0xff,0xff,
0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff, 0xff,0xff,0xff,0xff,0xff,0xff,
0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff, 0xff,0xff,0xff,0xff,0xff,0xff,
0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff, 0xff,0xff,0xff,0xff,0xff,0xff,
};

const uint8_t Triangle[] PROGMEM= //Meandr 256 values
{
0xff,0xfd,0xfb,0xf9,0xf7,0xf5,0xf3,0xf1,0xef,0xef, 0xeb,0xe9,0xe7,0xe5,0xe3,0xe1,
0xdf,0xdd,0xdb,0xd9,0xd7,0xd5,0xd3,0xd1,0xcf,0xcf, 0xcb,0xc9,0xc7,0xc5,0xc3,0xc1,
0xbf,0xbd,0xbb,0xb9,0xb7,0xb5,0xb3,0xb1,0xaf,0xaf, 0xab,0xa9,0xa7,0xa5,0xa3,0xa1,
0x9f,0x9d,0x9b,0x99,0x97,0x95,0x93,0x91,0x8f,0x8f, 0x8b,0x89,0x87,0x85,0x83,0x81,
0x7f,0x7d,0x7b,0x79,0x77,0x75,0x73,0x71,0x6f,0x6f, 0x6b,0x69,0x67,0x65,0x63,0x61,
0x5f,0x5d,0x5b,0x59,0x57,0x55,0x53,0x51,0x4f,0x4f, 0x4b,0x49,0x47,0x45,0x43,0x41,
0x3f,0x3d,0x3b,0x39,0x37,0x35,0x33,0x31,0x2f,0x2f, 0x2b,0x29,0x27,0x25,0x23,0x21,
0x1f,0x1d,0x1b,0x19,0x17,0x15,0x13,0x11,0x0f,0x0f, 0x0b,0x09,0x07,0x05,0x03,0x01,
0x00,0x02,0x04,0x06,0x08,0x0a,0x0c,0x0e,0x10,0x12, 0x14,0x16,0x18,0x1a,0x1c,0x1e,
0x20,0x22,0x24,0x26,0x28,0x2a,0x2c,0x2e,0x30,0x32, 0x34,0x36,0x38,0x3a,0x3c,0x3e,
0x40,0x42,0x44,0x46,0x48,0x4a,0x4c,0x4e,0x50,0x52, 0x54,0x56,0x58,0x5a,0x5c,0x5e,
0x60,0x62,0x64,0x66,0x68,0x6a,0x6c,0x6e,0x70,0x72, 0x74,0x76,0x78,0x7a,0x7c,0x7e,
0x80,0x82,0x84,0x86,0x88,0x8a,0x8c,0x8e,0x90,0x92, 0x94,0x96,0x98,0x9a,0x9c,0x9e,
0xa0,0xa2,0xa4,0xa6,0xa8,0xaa,0xac,0xae,0xb0,0xb2, 0xb4,0xb6,0xb8,0xba,0xbc,0xbe,
0xc0,0xc2,0xc4,0xc6,0xc8,0xca,0xcc,0xce,0xd0,0xd2, 0xd4,0xd6,0xd8,0xda,0xdc,0xde,
0xe0,0xe2,0xe4,0xe6,0xe8,0xea,0xec,0xee,0xf0,0xf2, 0xf4,0xf6,0xf8,0xfa,0xfc,0xfe
};

const uint8_t Test[] PROGMEM= //Meandr 256 values
{
0x7f,0x7f,0x7f,0x7f,0x7f,0x7f,0x7f,0x7f,0x7f,0x7f, 0x7f,0x7f,0x7f,0x7f,0x7f,0x7f,
0x7f,0x7f,0x7f,0x7f,0x7f,0x7f,0x7f,0x7f,0x7f,0x7f, 0x7f,0x7f,0x7f,0x7f,0x7f,0x7f,
0x7f,0x7f,0x7f,0x7f,0x7f,0x7f,0x7f,0x7f,0x7f,0x7f, 0x7f,0x7f,0x7f,0x7f,0x7f,0x7f,
0x7f,0x7f,0x7f,0x7f,0x7f,0x7f,0x7f,0x7f,0x7f,0x7f, 0x7f,0x7f,0x7f,0x7f,0x7f,0x7f,
0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff, 0xff,0xff,0xff,0xff,0xff,0xff,
0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff, 0xff,0xff,0xff,0xff,0xff,0xff,
0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff, 0xff,0xff,0xff,0xff,0xff,0xff,
0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff, 0xff,0xff,0xff,0xff,0xff,0xff,
0x7f,0x7f,0x7f,0x7f,0x7f,0x7f,0x7f,0x7f,0x7f,0x7f, 0x7f,0x7f,0x7f,0x7f,0x7f,0x7f,
0x7f,0x7f,0x7f,0x7f,0x7f,0x7f,0x7f,0x7f,0x7f,0x7f, 0x7f,0x7f,0x7f,0x7f,0x7f,0x7f,
0x7f,0x7f,0x7f,0x7f,0x7f,0x7f,0x7f,0x7f,0x7f,0x7f, 0x7f,0x7f,0x7f,0x7f,0x7f,0x7f,
0x7f,0x7f,0x7f,0x7f,0x7f,0x7f,0x7f,0x7f,0x7f,0x7f, 0x7f,0x7f,0x7f,0x7f,0x7f,0x7f,
0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00, 0x00,0x00,0x00,0x00,0x00,0x00,
0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00, 0x00,0x00,0x00,0x00,0x00,0x00,
0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00, 0x00,0x00,0x00,0x00,0x00,0x00,
0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00, 0x00,0x00,0x00,0x00,0x00,0x00,
};

Потом идет объявление указателя

//array of pointers to signal tables
const uint8_t *SIGNALS[] =
{
Sinewave,
Meandr,
Triangle,
Test
};

В програме вызывается ассемблерная вставка

Signal_OUT(SIGNALS[SG.mode],
(uint8_t)((uint32_t)SG.acc››16),
(uint8_t)((uint32_t)SG.acc››8 ),
(uint8_t)SG.acc);

SG.acc - задатчик частоты
Ну и сама процедура генерации

void Signal_OUT(const uint8_t *signal, uint8_t ad2, uint8_t ad1, uint8_t ad0)
{
asm volatile( "eor r18, r18 ;r18‹-0" "\n\t"
"eor r19, r19 ;r19‹-0" "\n\t"
"1:" "\n\t"
"add r18, %[BtL] ;1 cycle" "\n\t"
"adc r19, %[BtM] ;1 cycle" "\n\t"
"adc %A[Adr], %[BtH] ;1 cycle" "\n\t"
"lpm ;3 cycles" "\n\t"
"out %[Out], __tmp_reg__ ;1 cycle" "\n\t"
"sbis %[Add], 1 ;1 cycle if no skip" "\n\t"
"rjmp 1b ;2 cycles. Total 10 cycles" "\n\t"
:
:[BtL] "r" (ad0), [BtM] "r" (ad1), [BtH] "r" (ad2), [Adr] "e" (signal), [Out] "I" (_SFR_IO_ADDR(PORTC)), [Add] "I" (_SFR_IO_ADDR(SPCR))
:"r18", "r19"
);
}

[-vitalik-]

Проблема вот, в чем:
генерация есть, но кусок данных выхватывается с предыдущей таблицы.
Например, если делаю вызов

//start DDS
Signal_OUT(SIGNALS[SG.mode],
(uint8_t)((uint32_t)SG.acc››16),
(uint8_t)((uint32_t)SG.acc››,
(uint8_t)SG.acc); //set signal level to 0
/

и SG.mode равно 1, идет меандр, но последние где-то 25% байт тянутся с таблицы синусов.
Если SG.mode равно 3, идет ступенчатая тестовая кривая, но тоже последние где-то 25% байт тянутся с таблицы треугольного сигнала.

Короче, наблюдается смещение.
Не подскажете, где еще покопать?

[Wiza_]

Подскажем. Ваши таблицы должны начинаться в памяти с адреса, кратному 0x100. Иначе смещение неизбежно

[-vitalik-]

Подскажем. Ваши таблицы должны начинаться в памяти с адреса, кратному 0x100. Иначе смещение неизбежно

а как на этапе объявления задать таблицам желаемое размещение, типа как директивой org в асме?

[Wiza_]

а как на этапе объявления задать таблицам желаемое размещение, типа как директивой org в асме?

Увы - не сталкивался. Попробуйте глянуть объектный файл компилятора и определить насколько происходит смещение. Потом создайте еще один массив перед всеми, чтобы ваши таблицы сдвинулись на начало следующей страницы. Костыль конечно, но для начала сойдёт.

А может и в настройках компилятора что-то путное найдётся

[-vitalik-]

Так и сделал, набросал перед объявлением таблиц мусора.

//asm(.org 100);

const uint8_t empty[] PROGMEM=
{0x00,0x01,0x02,0x03,0x04,0x05,0x06,0x07,0x08,0x09 ,0x0a,0x0b,0x0c,0x0d,0x0e,0x0f,
0x10,0x11,0x12,0x13,0x14,0x15,0x16,0x17,0x18,0x19, 0x1a,0x1b,0x1c,0x1d,0x1e,0x1f,
0x20,0x21,0x22,0x23,0x24,0x25,0x26,0x27,0x28,0x29, 0x2a,0x2b,0x2c,0x2d,0x2e,0x2f,
0x30,0x31,0x32,0x33,0x34,0x35,0x36,0x37,0x38,0x39, 0x3a,0x3b,0x3c,0x3d,0x3e,0x3f,
0x40,0x41,0x42,0x43,0x44,0x45,0x46,0x47,0x48,0x49, 0x4a,0x4b,0x4c,0x4d,0x4e,0x4f,
0x50,0x51,0x52,0x53,0x54,0x55,0x56,0x57,0x58,0x59, 0x5a,0x5b,0x5c,0x5d,0x5e,0x5f,
0x60,0x61,0x62,0x63,0x64,0x65,0x66,0x67,0x68,0x69, 0x6a,0x6b,0x6c,0x6d,0x6e,0x6f,
0x70,0x71,0x72,0x73,0x74,0x75,0x76,0x77,0x78,0x79, 0x7a,0x7b,0x7c,0x7d,0x7e,0x7f,
0x80,0x81,0x82,0x83,0x84,0x85,0x86,0x87,0x88,0x89, 0x8a,0x8b,0x8c,0x8d,0x8e,0x8f,
0x90,0x91,0x92,0x93,0x94,0x95,0x96,0x97,0x98,0x99, 0x9a,0x9b,0x9c,0x9d,0x9e,0x9f,
0xa0,0xa1,0xa2,0xa3,0xa4,0xa5,0xa6,0xa7,0xa8,0xa9, 0xaa,0xab
};

Генератор то заработал, но совесть - не спит. должно же быть какое-то красивое решение

[STM32F0]

Объявляете свою секцию, заталкиваете туда данные, правите скрипт линкера. Как-то так.
Точнее смотрите FAQ на nongnu и темы на элхе. Поиском их, поиском. Например вот.
http://electronix.ru/forum/index.php...912&pid=770358