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user_interface.c
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user_interface.c
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#include "main.h"
static int8_t iLastVal = 0;
static int8_t iEnc_delta = 0;
static volatile uint8_t byButtons = 0;
volatile uint8_t byButtonActive = 0;
volatile uint16_t wTimeout = BUT_TIMEOUT;
struct
{
unsigned Key0:1;
unsigned Key1:1;
unsigned Key2:1;
} sKeys;
struct
{
unsigned Key0:1;
unsigned Key1:1;
unsigned Key2:1;
} sState;
static const int16_t iaTable[16] = {0,1,-1,0,-1,0,0,1,1,0,0,-1,0,-1,1,0};
/** @brief read Encoder pins and determine new position */
static void UI_Encoder_Check(void);
/**
* @brief Debounce Button pushes
*
* @return Debounced Button status (8-Bit coded)
*/
static uint8_t UI_Buttons_Debounce(void);
/**
* @brief Get debounced 8-bit coded variable and check the chance of
the individual buttons
*/
static void UI_Buttons_Check(void);
/**
* @brief Read Button states from GPIOs and store them in a 8-Bit coded variable
*/
static uint8_t UI_Buttons_Read(void);
void UI_Buttons_Init(void)
{
/* Buttons 1-3 */
GPIO_Init(GPIOC, GPIO_Pin_2, GPIO_Mode_In_PU_IT);
GPIO_Init(GPIOC, GPIO_Pin_4, GPIO_Mode_In_PU_IT);
GPIO_Init(GPIOA, GPIO_Pin_0, GPIO_Mode_In_PU_IT);
EXTI_SetPinSensitivity((EXTI_Pin_TypeDef)GPIO_Pin_0, EXTI_Trigger_Falling);
EXTI_SetPinSensitivity((EXTI_Pin_TypeDef)GPIO_Pin_2, EXTI_Trigger_Falling);
EXTI_SetPinSensitivity((EXTI_Pin_TypeDef)GPIO_Pin_4, EXTI_Trigger_Falling);
/* Rotary Encoder */
GPIO_Init(GPIOC, GPIO_Pin_0, GPIO_Mode_In_FL_No_IT);
GPIO_Init(GPIOC, GPIO_Pin_1, GPIO_Mode_In_FL_No_IT);
}
void UI_Int_Handler(uint8_t byButton)
{
wTimeout = BUT_TIMEOUT;
byButtons = UI_Buttons_Debounce();
byRunning = 1;
}
void UI_Handler(void)
{
static int8_t iEncValue = 0;
static uint8_t byNumber = 0, byNumberOld = 0;
wTimeout--;
if(wTimeout == 0)
{
ModelN_Menu_Set_State(MENU_SHOW_TIME);
byRunning = 0;
}
UI_Encoder_Check();
byButtons = UI_Buttons_Debounce();
UI_Buttons_Check();
if(UI_Buttons_Get(BUTTON0) == 1)
{
if(ModelN_Menu_Get_State() < MENU_SHOW_HUMID)
{
ModelN_Menu_Set_State(ModelN_Menu_Get_State()+1);
}
else
{
ModelN_Menu_Set_State(MENU_SHOW_TIME);
}
}
/* Middle Button -> When pressed, go to temperature setting menu */
if(ModelN_Menu_Get_State() != MENU_SET_TEMP)
{
if(UI_Buttons_Get(BUTTON1) == 1)
{
ModelN_Menu_Set_State(MENU_SET_TEMP);
}
}
if(UI_Buttons_Get(BUTTON2) == 1)
{
}
if(byNumber != byNumberOld)
{
Disp_Clear();
Disp_Number(1, byNumber/100);
Disp_Number(2, (byNumber%100)/10);
Disp_Number(3, (byNumber%100)%10);
byNumberOld = byNumber;
}
}
void UI_Timeout_Reset(void)
{
wTimeout = BUT_TIMEOUT;
}
/* ENCODER *******************************************************************/
static void UI_Encoder_Check(void)
{
/* read encoder state every 1 ms (tick interrupt) */
iLastVal = (iLastVal << 2) & 0x0F;
if(GPIO_ReadInputDataBit(GPIOC, GPIO_Pin_0) != 0)
{
iLastVal |= 2;
}
if(GPIO_ReadInputDataBit(GPIOC, GPIO_Pin_1) != 0)
{
iLastVal |= 1;
}
iEnc_delta += iaTable[iLastVal];
}
int8_t UI_Encoder_Read(void)
{
int8_t iRet;
iRet = iEnc_delta;
iEnc_delta = 0;
return iRet;
}
/* BUTTONS *******************************************************************/
uint8_t UI_Buttons_Get(uint8_t byButton)
{
uint8_t byRet = 0;
switch(byButton)
{
case BUTTON0:
if(sKeys.Key0 == 1)
{
byRet = 1;
sKeys.Key0 = 0;
}
break;
case BUTTON1:
if(sKeys.Key1 == 1)
{
byRet = 1;
sKeys.Key1 = 0;
}
break;
case BUTTON2:
if(sKeys.Key2 == 1)
{
byRet = 1;
sKeys.Key2 = 0;
}
break;
default:
break;
}
return byRet;
}
static uint8_t UI_Buttons_Debounce(void)
{
static uint8_t byaBut[3] = {0};
static uint8_t byCnt = 0;
static uint8_t byRet;
if(byCnt == 3)
{
byRet = (byaBut[0] & byaBut[1]) |
(byaBut[1] & byaBut[2]) |
(byaBut[2] & byaBut[0]);
byCnt = 0;
}
else
{
byaBut[byCnt++] = UI_Buttons_Read();
}
return byRet;
}
static void UI_Buttons_Check(void)
{
if(byButtons & 0x04)
{
if(sState.Key0 == 0 && sKeys.Key0 == 0)
{
sKeys.Key0 = 1;
sState.Key0 = 1;
}
}
else
{
sState.Key0 = 0;
}
if(byButtons & 0x10)
{
if(sState.Key1 == 0 && sKeys.Key1 == 0)
{
sKeys.Key1 = 1;
sState.Key1 = 1;
}
}
else
{
sState.Key1 = 0;
}
if(byButtons & 0x01)
{
if(sState.Key2 == 0 && sKeys.Key2 == 0)
{
sKeys.Key2 = 1;
sState.Key2 = 1;
}
}
else
{
sState.Key2 = 0;
}
}
static uint8_t UI_Buttons_Read(void)
{
uint8_t byVal;
byVal = ((~GPIO_ReadInputDataBit(GPIOC, GPIO_Pin_2) & GPIO_Pin_2));
byVal |= ((~GPIO_ReadInputDataBit(GPIOC, GPIO_Pin_4) & GPIO_Pin_4));
byVal |= ((~GPIO_ReadInputDataBit(GPIOA, GPIO_Pin_0) & GPIO_Pin_0));
return byVal;
}