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bdk: gpio: add debounce set function

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The debounce time is not per pin but per bank. So software should manage proper time for sibling pins
This commit is contained in:
CTCaer 2023-03-31 07:43:16 +03:00
parent 1edb6583ac
commit 107fbd1d24
2 changed files with 21 additions and 0 deletions
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20
bdk/soc/gpio.c
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@ -110,6 +110,26 @@ int gpio_read(u32 port, u32 pins)
return (GPIO(port_offset) & pins) ? 1 : 0;
}
void gpio_set_debounce(u32 port, u32 pins, u32 ms)
{
const u32 db_ctrl_offset = GPIO_DB_CTRL_OFFSET(port);
const u32 db_cnt_offset = GPIO_DB_CNT_OFFSET(port);
if (ms)
{
if (ms > 255)
ms = 255;
// Debounce time affects all pins of the same port.
GPIO(db_cnt_offset) = ms;
GPIO(db_ctrl_offset) = (pins << 8) | pins;
}
else
GPIO(db_ctrl_offset) = (pins << 8) | 0;
(void)GPIO(db_ctrl_offset); // Commit the write.
}
static void _gpio_interrupt_clear(u32 port, u32 pins)
{
const u32 port_offset = GPIO_INT_CLR_OFFSET(port);

1
bdk/soc/gpio.h
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@ -89,6 +89,7 @@ void gpio_direction_input(u32 port, u32 pins);
void gpio_direction_output(u32 port, u32 pins, int high);
void gpio_write(u32 port, u32 pins, int high);
int gpio_read(u32 port, u32 pins);
void gpio_set_debounce(u32 port, u32 pins, u32 ms);
int gpio_interrupt_status(u32 port, u32 pins);
void gpio_interrupt_enable(u32 port, u32 pins, int enable);
void gpio_interrupt_level(u32 port, u32 pins, int high, int edge, int delta);