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annotate examples/c3/blink.c3 @ 306:b145f8e6050b

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Start on c3 rewrite
author Windel Bouwman
date Mon, 09 Dec 2013 19:00:21 +0100
parents 158068af716c
children
rev   line source
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1 /* This file blinks a LED on the STM32F4 discovery board.
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2
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3 the board has 4 leds on PD12, PD13, PD14 and PD15
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4
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5 */
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6
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7 module blink;
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8
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9 import stm32f4xx;
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10
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11 // Functions:
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12 function void main()
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13 {
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14 // Memory mapped control registers:
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15 var GPIO_Type GPIOD;
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16 GPIOD = cast<GPIO_Type>(0x40020C00);
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17 var RCC_Type RCC;
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18 RCC = cast<RCC_Type>(0x40023800);
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20 // Enable the clock to port D:
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21 RCC->AHB1ENR = RCC->AHB1ENR | 0x8;
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22
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23
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24 // PD13 == output (01)
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25 GPIOD->MODER = (1 << 26);
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26 GPIOD->ODR = (1 << 13);
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27
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28 while(true) {}
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29 }
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30