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57 lines
1.1 KiB
Plaintext
57 lines
1.1 KiB
Plaintext
(*
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Пример для STM32L152C-DISCO
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В зависимости от значения константы LED,
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мигает синий или зеленый светодиод.
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*)
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MODULE Blink;
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IMPORT SYSTEM;
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CONST
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GPIOB = 40020400H;
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GPIOB_MODER = GPIOB;
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GPIOB_BSRR = GPIOB + 18H;
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RCC = 40023800H;
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RCC_AHBENR = RCC + 1CH;
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Blue = 6; (* PB6 *)
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Green = 7; (* PB7 *)
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LED = Blue;
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VAR
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x: SET;
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state: BOOLEAN;
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PROCEDURE Delay (x: INTEGER);
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BEGIN
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REPEAT
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DEC(x)
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UNTIL x = 0
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END Delay;
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BEGIN
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(* подключить GPIOB *)
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SYSTEM.GET(RCC_AHBENR, x);
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SYSTEM.PUT(RCC_AHBENR, x + {1});
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(* настроить PB6 или PB7 на выход *)
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SYSTEM.GET(GPIOB_MODER, x);
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SYSTEM.PUT(GPIOB_MODER, x - {LED * 2 - 1} + {LED * 2});
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state := FALSE;
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REPEAT
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(* включить или выключить светодиод *)
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SYSTEM.PUT(GPIOB_BSRR, {LED + 16 * ORD(state)});
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state := ~state;
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Delay(200000)
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UNTIL FALSE
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END Blink. |