/**
* @brief Configures The selected IOs in interrupt mode.
* @param IOE16_ITSRC_Source: the source of the interrupts. Could be one or a
* combination of IT pins.
* @retval IOE16_OK: if configuration is OK. Other value if error.
*/
uint8_t IOE16_ITConfig(uint32_t IOE16_ITSRC_Source)
{
/* Configure the Interrupt output pin to generate low level */
IOE16_ITOutConfig(IOE16_Polarity_Low);
/* Enable the Global interrupt */
IOE16_GITCmd(ENABLE);
/* Put IO pins in input mode */
IOE16_IOPinConfig(IOE16_ITSRC_Source, Direction_IN);
/* Read the GPIO interrupt status to clear all pending bits if any */
IOE16_I2C_ReadDeviceRegister(IOE16_REG_ISGPIOR_LSB);
/* Enable the pins to generate interrupt */
IOE16_IOITConfig(IOE16_ITSRC_Source, ENABLE);
// clear interrupt status - INT_STA_LOW(0x0A), Io_Expander's INT pin output also cleared
IOE16_I2C_ReadDeviceRegister(0x0A );
/* Read IOs state to let IO interrupt occur */
IOE16_I2C_ReadDeviceRegister(IOE16_REG_GPMR_LSB);
IOE16_I2C_ReadDeviceRegister(IOE16_REG_GPMR_MSB);
/* Configure the Interrupt line as EXTI source */
//phv 2102IOE16_EXTI_Config();
/* If all OK return IOE16_OK */
return IOE16_OK;
}
/**
* @brief Sets a bit value to an output IO pin.
* @param IO_Pin: The output pin to be set or reset. This parameter could be any
* combination of the following values:
* @arg IO_Pin_x: where x can be from 0 to 15.
* @param NewState: The value to be set. This parameter can be one of the
* following values: BitSet or BitReset. See IOE16_BitVal_TypeDef.
* @retval IOE16_OK or PARAM_ERROR
*/
uint8_t IOE16_SetIOPin(uint16_t IO_Pin, IOE16_BitValue_TypeDef NewState)
{
uint16_t tmp = 0;
/* Get the IO expander Address according to which pin is to be controlled */
if ((IO_Pin & IO16_Pin_ALL_LSB) != 0)
{
tmp = (uint16_t)IOE16_I2C_ReadDeviceRegister(IOE16_REG_GPMR_LSB);
/* Apply the bit value to the selected pin */
if (NewState == IOE16_BitReset)
{
tmp &= ~ (uint16_t)IO_Pin;
}
else
{
tmp |= (uint16_t)IO_Pin;
}
/* Set register value */
IOE16_I2C_WriteDeviceRegister(IOE16_REG_GPSR_LSB, (uint8_t)tmp);
}
else if((IO_Pin & IO16_Pin_ALL_MSB) != 0)
{
tmp = (uint16_t)IOE16_I2C_ReadDeviceRegister(IOE16_REG_GPMR_MSB);
/* Apply the bit value to the selected pin */
if (NewState == IOE16_BitReset)
{
tmp &= ~ (uint16_t)IO_Pin;
}
else
{
tmp |= (uint16_t)IO_Pin;
}
/* Set register value */
IOE16_I2C_WriteDeviceRegister(IOE16_REG_GPSR_MSB, (uint8_t)(uint8_t)(tmp >> 8));
}
/**
* @brief Main program
* @param None
* @retval None
*/
int main(void)
{
/*!< At this stage the microcontroller clock setting is already configured,
this is done through SystemInit() function which is called from startup
files (startup_stm32f40_41xxx.s/startup_stm32f427_437xx.s/startup_stm32f429_439xx.s)
before to branch to application main.
*/
/* SysTick end of count event each 10ms */
RCC_GetClocksFreq(&RCC_Clocks);
SysTick_Config(RCC_Clocks.HCLK_Frequency / 100);
/* Initialize LEDs mounted on EVAL board */
STM_EVAL_LEDInit(LED1);
STM_EVAL_LEDInit(LED2);
STM_EVAL_LEDInit(LED3);
STM_EVAL_LEDInit(LED4);
/* Select the Button test mode (polling or interrupt) BUTTON_MODE in main.h */
STM_EVAL_PBInit(BUTTON_WAKEUP, BUTTON_MODE);
STM_EVAL_PBInit(BUTTON_TAMPER, BUTTON_MODE);
/* Initialize the LCD */
LCD_Init();
/* Initialize the LCD Layers */
LCD_LayerInit();
/* Enable LCD display */
LCD_DisplayOn();
/* Set foreground layer */
LCD_SetLayer(LCD_FOREGROUND_LAYER);
/* Clear the LCD */
LCD_Clear(White);
/* Set the LCD Back Color */
LCD_SetBackColor(White);
/* Set the LCD Text Color */
LCD_SetTextColor(Blue);
LCD_DisplayStringLine(LCD_LINE_0, (uint8_t *)" STM324x9I-EVAL ");
LCD_DisplayStringLine(LCD_LINE_1, (uint8_t *)" Example on how to ");
LCD_DisplayStringLine(LCD_LINE_2, (uint8_t *)" use the IO Expander ");
/* Configure the IO Expander */
if (IOE_Config() == IOE_OK && IOE16_Config() == IOE16_OK)
{
LCD_DisplayStringLine(LCD_LINE_3, (uint8_t *)" IO Expander OK ");
}
else
{
LCD_DisplayStringLine(LCD_LINE_4, (uint8_t *)"IO Expander FAILED ");
LCD_DisplayStringLine(LCD_LINE_5, (uint8_t *)" Please Reset the ");
LCD_DisplayStringLine(LCD_LINE_6, (uint8_t *)" board and start ");
LCD_DisplayStringLine(LCD_LINE_7, (uint8_t *)" again ");
while(1);
}
/* LEDs Control blocks */
LCD_SetTextColor(Blue);
LCD_DrawRect(310, 180, 40, 60);
LCD_SetTextColor(Red);
LCD_DrawRect(230, 180, 40, 60);
LCD_SetTextColor(Yellow);
LCD_DrawRect(150, 180, 40, 60);
LCD_SetTextColor(Green);
LCD_DrawRect(70, 180, 40, 60);
#ifdef IOE_INTERRUPT_MODE
/* Configure motherboard interrupt source IO_EXP4 */
IOE16_IOPinConfig(IOE16_TS_IT,Direction_IN);
IOE16_ITConfig(IOE16_TS_IT);
/* Enable joystick interrupt */
IOE16_ITConfig(JOY_IO16_PINS);
/* Enable the Touch Screen interrupt */
IOE_TSITConfig();
/* Read IOs state to let IO interrupt occur */
IOE16_I2C_ReadDeviceRegister(IOE16_REG_GPMR_LSB);
IOE16_I2C_ReadDeviceRegister(IOE16_REG_GPMR_MSB);
#endif /* IOE_INTERRUPT_MODE */
while(1)
{
#ifdef IOE_POLLING_MODE
static JOY_State_TypeDef JoyState = JOY_NONE;
static TS_STATE* TS_State;
/* Get the Joystick State */
JoyState = IOE16_JoyStickGetState();
/* Set the LCD Text Color */
LCD_SetTextColor(Blue);
switch (JoyState)
{
case JOY_NONE:
LCD_DisplayStringLine(LCD_LINE_5, (uint8_t *)"JOY: ---- ");
break;
case JOY_UP:
LCD_DisplayStringLine(LCD_LINE_5, (uint8_t *)"JOY: UP ");
break;
case JOY_DOWN:
LCD_DisplayStringLine(LCD_LINE_5, (uint8_t *)"JOY: DOWN ");
break;
case JOY_LEFT:
LCD_DisplayStringLine(LCD_LINE_5, (uint8_t *)"JOY: LEFT ");
break;
case JOY_RIGHT:
LCD_DisplayStringLine(LCD_LINE_5, (uint8_t *)"JOY: RIGHT ");
break;
case JOY_CENTER:
LCD_DisplayStringLine(LCD_LINE_5, (uint8_t *)"JOY: CENTER ");
break;
default:
LCD_DisplayStringLine(LCD_LINE_5, (uint8_t *)"JOY: ERROR ");
break;
}
/* Update the structure with the current position */
TS_State = IOE_TS_GetState();
if ((TS_State->TouchDetected) && (TS_State->Y < 92) && (TS_State->Y > 52))
{
if ((TS_State->X > 60) && (TS_State->X < 120))
{
LCD_SetTextColor(LCD_COLOR_GREEN);
LCD_DisplayStringLine(LCD_LINE_10, (uint8_t *)" LD1 ");
STM_EVAL_LEDOn(LED1);
}
else if ((TS_State->X > 140) && (TS_State->X < 200))
{
LCD_SetTextColor(LCD_COLOR_YELLOW);
LCD_DisplayStringLine(LCD_LINE_10, (uint8_t *)" LD2 ");
STM_EVAL_LEDOn(LED2);
}
else if ((TS_State->X > 220) && (TS_State->X < 280))
{
LCD_SetTextColor(LCD_COLOR_RED);
LCD_DisplayStringLine(LCD_LINE_10, (uint8_t *)" LD3 ");
STM_EVAL_LEDOn(LED3);
}
else if ((TS_State->X > 300) && (TS_State->X < 360))
{
LCD_SetTextColor(LCD_COLOR_BLUE);
LCD_DisplayStringLine(LCD_LINE_10, (uint8_t *)" LD4 ");
STM_EVAL_LEDOn(LED4);
}
}
else
{
STM_EVAL_LEDOff(LED1);
STM_EVAL_LEDOff(LED2);
STM_EVAL_LEDOff(LED3);
STM_EVAL_LEDOff(LED4);
}
#endif /* IOE_POLLING_MODE */
#ifdef BUTTON_POLLING_MODE
/* Insert 10 ms delay */
Delay(1);
/* Set the LCD Text Color */
LCD_SetTextColor(Blue);
if (STM_EVAL_PBGetState(BUTTON_TAMPER) == 0)
{
/* Toggle LD2 */
STM_EVAL_LEDToggle(LED2);
LCD_DisplayStringLine(LCD_LINE_4, (uint8_t *)"Pol: TAMPER/KEY Pressed ");
}
if (STM_EVAL_PBGetState(BUTTON_WAKEUP) != 0)
{
/* Toggle LD3 */
STM_EVAL_LEDToggle(LED3);
LCD_DisplayStringLine(LCD_LINE_4, (uint8_t *)"Pol: WAKEUP Pressed ");
}
#endif
}
}
