Chris
128d42c586
- Added function to read out the display_buffer via USB-Serial - Added basic structure and files for later complete firmware (still in progress) - Added Doc folder with schematic in it - Added Python script and batch file to read out the display buffer and open the image in gimp
95 lines
2.4 KiB
C
95 lines
2.4 KiB
C
/*
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* Switch.c
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*
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* Created: Sat Jan 28 2023 15:21:38
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* Author Chris
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*/
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// ============================================================================================
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// Includes
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#include "Switch.h"
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#include "pico/time.h"
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#include "pico/types.h"
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#include "pico/stdlib.h"
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#include "hardware/gpio.h"
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// ============================================================================================
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// Defines
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#define SWITCH_GPIO 23
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#define GPIO_IRQ_LEVEL_LOW 1
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#define GPIO_IRQ_LEVEL_HIGH 2
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#define GPIO_IRQ_EDGE_FALL 4
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#define GPIO_IRQ_EDGE_RISE 8
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#define SWITCH_IDLE 1
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#define SWITCH_PRESSED 0
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#define DEBOUNCE_TIME_SWITCH_MS 300
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// ============================================================================================
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// Variables
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volatile uint32_t _Debounce_Time_Switch_ms;
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volatile bool _Switch_Press_Occurred;
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// ============================================================================================
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// Function Declarations
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/*******************************************************************
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Interrupt Service Routines
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*******************************************************************/
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// Interrupt Service Routine from Rotary Encoder also used for this one
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// void ISR_Switch(uint gpio, uint32_t events)
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// {
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// if(gpio == SWITCH_GPIO)
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// {
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// uint32_t Current_Time_ms = to_ms_since_boot(get_absolute_time());
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// if(Current_Time_ms < _Debounce_Time_Switch_ms)
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// {
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// return;
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// }
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// _Switch_Press_Occurred = true;
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// _Debounce_Time_Switch_ms = Current_Time_ms + DEBOUNCE_TIME_SWITCH_MS;
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// }
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// }
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/*******************************************************************
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Functions
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*******************************************************************/
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void Switch_Init(bool use_pullup)
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{
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_Debounce_Time_Switch_ms = 0;
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_Switch_Press_Occurred = false;
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gpio_init(SWITCH_GPIO); gpio_set_dir(SWITCH_GPIO, false);
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if(use_pullup == SWITCH_USE_INTERNAL_PULLUP) {
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gpio_pull_up(SWITCH_GPIO);
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}
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// ISR from Rotery Encoder used for Switch as well. See file Rotary_Encoder.c
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gpio_set_irq_enabled(SWITCH_GPIO, GPIO_IRQ_EDGE_FALL, true);
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}
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bool Switch_Press_Occurred(void)
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{
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bool Return_Value = _Switch_Press_Occurred;
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_Switch_Press_Occurred = false;
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return Return_Value;
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}
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/*******************************************************************
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Internal Functions
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*******************************************************************/ |