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73 lines
1.7 KiB
73 lines
1.7 KiB
#include <stdint.h> |
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#include <stdlib.h> |
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#include <chopstx.h> |
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#include "board.h" |
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#define PERIPH_BASE 0x40000000 |
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#define APB1PERIPH_BASE PERIPH_BASE |
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#define APB2PERIPH_BASE (PERIPH_BASE + 0x10000) |
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struct GPIO { |
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volatile uint32_t CRL; |
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volatile uint32_t CRH; |
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volatile uint32_t IDR; |
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volatile uint32_t ODR; |
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volatile uint32_t BSRR; |
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volatile uint32_t BRR; |
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volatile uint32_t LCKR; |
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}; |
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#define GPIOA_BASE (APB2PERIPH_BASE + 0x0800) |
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#define GPIOA ((struct GPIO *) GPIOA_BASE) |
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#define GPIOB_BASE (APB2PERIPH_BASE + 0x0C00) |
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#define GPIOB ((struct GPIO *) GPIOB_BASE) |
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#define GPIOC_BASE (APB2PERIPH_BASE + 0x1000) |
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#define GPIOC ((struct GPIO *) GPIOC_BASE) |
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#define GPIOD_BASE (APB2PERIPH_BASE + 0x1400) |
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#define GPIOD ((struct GPIO *) GPIOD_BASE) |
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#define GPIOE_BASE (APB2PERIPH_BASE + 0x1800) |
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#define GPIOE ((struct GPIO *) GPIOE_BASE) |
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static struct GPIO *const GPIO_STICK = ((struct GPIO *const) GPIO_LED_BASE); |
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static struct GPIO *const GPIO_OTHER = ((struct GPIO *const) GPIO_OTHER_BASE); |
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static struct GPIO *const GPIO_OTHER1 = ((struct GPIO *const) GPIOC_BASE); |
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static struct GPIO *const GPIO_OTHER2 = ((struct GPIO *const) GPIOB_BASE); |
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#define GPIO_STICK_L 3 |
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#define GPIO_STICK_R 4 |
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#define GPIO_STICK_U 5 |
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#define GPIO_STICK_D 6 |
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#define GPIO_SHUTDOWN 13 |
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#define GPIO_PBUTTON 8 |
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#define GPIO_BACKLIGHT 8 |
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void |
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shutdown (void) |
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{ |
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GPIO_OTHER1->BRR = (1 << GPIO_SHUTDOWN); |
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GPIO_OTHER1->BSRR = (1 << GPIO_SHUTDOWN); |
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while (1) |
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chopstx_usec_wait (500*1000); |
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} |
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void |
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set_backlight (int on) |
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{ |
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if (on) |
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GPIO_OTHER2->BSRR = (1 << GPIO_BACKLIGHT); |
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else |
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GPIO_OTHER2->BRR = (1 << GPIO_BACKLIGHT); |
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} |
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int |
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joystick (void) |
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{ |
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return (GPIO_STICK->IDR >> GPIO_STICK_L) & 0xf; |
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} |
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int |
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pbutton (void) |
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{ |
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return (GPIO_OTHER->IDR >> GPIO_PBUTTON) & 1; |
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}
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