Mateusz Grzywacz
/
FastIO
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FastIO_LPC81X.h@1:85a4a54f15e3, 2014-07-02 (annotated)
- Committer:
- Sissors
- Date:
- Wed Jul 02 06:01:51 2014 +0000
- Revision:
- 1:85a4a54f15e3
- Child:
- 2:1a6ed4b84590
Added LPC81X
Who changed what in which revision?
| User | Revision | Line number | New contents of line |
|---|---|---|---|
| Sissors | 1:85a4a54f15e3 | 1 | #ifdef TARGET_LPC81X |
| Sissors | 1:85a4a54f15e3 | 2 | |
| Sissors | 1:85a4a54f15e3 | 3 | #include "mbed.h" |
| Sissors | 1:85a4a54f15e3 | 4 | #include "pinmap.h" |
| Sissors | 1:85a4a54f15e3 | 5 | |
| Sissors | 1:85a4a54f15e3 | 6 | typedef struct { |
| Sissors | 1:85a4a54f15e3 | 7 | __I uint32_t *reg_in; |
| Sissors | 1:85a4a54f15e3 | 8 | uint32_t mask; |
| Sissors | 1:85a4a54f15e3 | 9 | } fastio_vars; |
| Sissors | 1:85a4a54f15e3 | 10 | |
| Sissors | 1:85a4a54f15e3 | 11 | #define PINMASK (1 << ((int)pin & 0x1F)) |
| Sissors | 1:85a4a54f15e3 | 12 | static void gpio_enable(void); |
| Sissors | 1:85a4a54f15e3 | 13 | |
| Sissors | 1:85a4a54f15e3 | 14 | #define INIT_PIN container.mask = PINMASK; container.reg_in = &LPC_GPIO_PORT->PIN0; gpio_enable(); pin_function(pin, 0) |
| Sissors | 1:85a4a54f15e3 | 15 | |
| Sissors | 1:85a4a54f15e3 | 16 | #define SET_DIR_INPUT (LPC_GPIO_PORT->DIR0 &= ~PINMASK) |
| Sissors | 1:85a4a54f15e3 | 17 | #define SET_DIR_OUTPUT (LPC_GPIO_PORT->DIR0 |= PINMASK) |
| Sissors | 1:85a4a54f15e3 | 18 | #define SET_MODE(pull) (pin_mode(pin, pull)) |
| Sissors | 1:85a4a54f15e3 | 19 | |
| Sissors | 1:85a4a54f15e3 | 20 | #define WRITE_PIN_SET (LPC_GPIO_PORT->SET0 = PINMASK) |
| Sissors | 1:85a4a54f15e3 | 21 | #define WRITE_PIN_CLR (LPC_GPIO_PORT->CLR0 = PINMASK) |
| Sissors | 1:85a4a54f15e3 | 22 | |
| Sissors | 1:85a4a54f15e3 | 23 | #define READ_PIN ((*container.reg_in & container.mask) ? 1 : 0) |
| Sissors | 1:85a4a54f15e3 | 24 | |
| Sissors | 1:85a4a54f15e3 | 25 | static int gpio_enabled = 0; |
| Sissors | 1:85a4a54f15e3 | 26 | static void gpio_enable(void) |
| Sissors | 1:85a4a54f15e3 | 27 | { |
| Sissors | 1:85a4a54f15e3 | 28 | if (!gpio_enabled) { |
| Sissors | 1:85a4a54f15e3 | 29 | gpio_enabled = 1; |
| Sissors | 1:85a4a54f15e3 | 30 | |
| Sissors | 1:85a4a54f15e3 | 31 | /* Enable AHB clock to the GPIO domain. */ |
| Sissors | 1:85a4a54f15e3 | 32 | LPC_SYSCON->SYSAHBCLKCTRL |= (1<<6); |
| Sissors | 1:85a4a54f15e3 | 33 | |
| Sissors | 1:85a4a54f15e3 | 34 | /* Peripheral reset control to GPIO and GPIO INT, a "1" bring it out of reset. */ |
| Sissors | 1:85a4a54f15e3 | 35 | LPC_SYSCON->PRESETCTRL &= ~(0x1<<10); |
| Sissors | 1:85a4a54f15e3 | 36 | LPC_SYSCON->PRESETCTRL |= (0x1<<10); |
| Sissors | 1:85a4a54f15e3 | 37 | } |
| Sissors | 1:85a4a54f15e3 | 38 | } |
| Sissors | 1:85a4a54f15e3 | 39 | |
| Sissors | 1:85a4a54f15e3 | 40 | #endif |