Noduino Interrupts
来自Jack's Lab
（版本间的差异）
(→Examples) |
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| 第11行： | 第11行： | ||
[[文件:RotaryEncoderWaveform.gif]] | [[文件:RotaryEncoderWaveform.gif]] | ||
| − | Use an encoder example | + | Use an encoder example: |
| + | |||
| + | * D8 connect to the channel A to receive the interrupt (rising) | ||
| + | * D9 connect to the channel B | ||
<source lang=cpp> | <source lang=cpp> | ||
| + | #include "noduino.h" | ||
| + | |||
| + | static int32_t pos = 0; | ||
| + | static bool past_b = 0; | ||
| + | |||
| + | void do_encoder_a() | ||
| + | { | ||
| + | past_b = (bool)digitalRead(D9); | ||
| + | past_b ? pos++ : pos--; | ||
| + | serial_printf("pos = %d\r\n", pos); | ||
| + | } | ||
| + | |||
| + | void setup() | ||
| + | { | ||
| + | serial_begin(115200); | ||
| + | |||
| + | pinMode(D9, INPUT); | ||
| + | |||
| + | attachInterrupt(D8, do_encoder_a, RISING); | ||
| + | } | ||
| + | void loop() | ||
| + | { | ||
| + | } | ||
</source> | </source> | ||
2016年8月28日 (日) 08:39的版本
1 Overview
- attachInterrupt()
- detachInterrupt()
- noInterrupts()
2 Examples
Use an encoder example:
- D8 connect to the channel A to receive the interrupt (rising)
- D9 connect to the channel B
#include "noduino.h"
static int32_t pos = 0;
static bool past_b = 0;
void do_encoder_a()
{
past_b = (bool)digitalRead(D9);
past_b ? pos++ : pos--;
serial_printf("pos = %d\r\n", pos);
}
void setup()
{
serial_begin(115200);
pinMode(D9, INPUT);
attachInterrupt(D8, do_encoder_a, RISING);
}
void loop()
{
}
