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Add gpio_get() API function.

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This commit is contained in:
Uwe Hermann 2009-07-18 17:41:31 +02:00
parent 83f5c58eb9
commit 3bef8767f9
2 changed files with 7 additions and 0 deletions
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1
include/libopenstm32/gpio.h
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@ -140,6 +140,7 @@
void gpio_set_mode(u32 gpioport, u8 mode, u8 cnf, u16 gpios);
void gpio_set(u32 gpioport, u16 gpios);
void gpio_clear(u32 gpioport, u16 gpios);
u16 gpio_get(u32 gpioport, u16 gpios);
void gpio_toggle(u32 gpioport, u16 gpios);
u16 gpio_port_read(u32 gpioport);
void gpio_port_write(u32 gpioport, u16 data);

6
lib/gpio.c
View File

@ -25,6 +25,7 @@
* GPIO_CNF_OUTPUT_PUSHPULL, GPIO12);
* gpio_set(GPIOB, GPIO4);
* gpio_clear(GPIOG, GPIO2 | GPIO9);
* gpio_get(GPIOC, GPIO1);
* gpio_toggle(GPIOA, GPIO7);
* reg16 = gpio_port_read(GPIOD);
* gpio_port_write(GPIOF, 0xc8fe);
@ -66,6 +67,11 @@ void gpio_clear(u32 gpioport, u16 gpios)
GPIO_BRR(gpioport) = gpios;
}
u16 gpio_get(u32 gpioport, u16 gpios)
{
return gpio_port_read(gpioport) & gpios;
}
/* TODO: Should work for multiple GPIOs? */
void gpio_toggle(u32 gpioport, u16 gpio)
{