54 lines
1.1 KiB
C
54 lines
1.1 KiB
C
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#ifndef DEVICE_IOKEY_H
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#define DEVICE_IOKEY_H
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#include "typedef.h"
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#include "device/device.h"
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// enum key_connect_way {
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// ONE_PORT_TO_LOW, //按键一个端口接低电平, 另一个端口接IO
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// ONE_PORT_TO_HIGH, //按键一个端口接高电平, 另一个端口接IO
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// DOUBLE_PORT_TO_IO, //按键两个端口接IO
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// };
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#define ONE_PORT_TO_LOW 0 //按键一个端口接低电平, 另一个端口接IO
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#define ONE_PORT_TO_HIGH 1 //按键一个端口接高电平, 另一个端口接IO
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#define DOUBLE_PORT_TO_IO 2 //按键两个端口接IO
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#define CUST_DOUBLE_PORT_TO_IO 3
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struct one_io_key {
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u8 port;
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};
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struct two_io_key {
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u8 in_port;
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u8 out_port;
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};
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union key_type {
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struct one_io_key one_io;
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struct two_io_key two_io;
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};
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struct iokey_port {
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union key_type key_type;
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u8 connect_way;
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u8 key_value;
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};
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struct iokey_platform_data {
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u8 enable;
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u8 num;
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const struct iokey_port *port;
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};
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//IOKEY API:
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extern int iokey_init(const struct iokey_platform_data *iokey_data);
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extern u8 io_get_key_value(void);
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#endif
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