/**
* @brief Initializes and Configures the IO_Expander Touch Panel Functionality
* and configures all STM32F429I_DISCO necessary
* hardware (GPIOs, APB clocks ..).
* @param None
* @retval IOE_OK if all initializations done correctly. Other value if error.
*/
uint8_t IOE_Config(void)
{
/* Configure the needed pins */
IOE_GPIO_Config();
/* I2C initialization */
IOE_I2C_Config();
/* Read IO Expander ID */
if(IOE_IsOperational())
{
return IOE_NOT_OPERATIONAL;
}
/* Generate IO Expander Software reset */
IOE_Reset();
/* IO Expander configuration */
/* Touch Panel controller and ADC configuration */
IOE_FnctCmd(IOE_ADC_FCT, ENABLE);
IOE_TP_Config();
/* Configuration is OK */
return IOE_OK;
}
/**
* @brief Initialize and Configures the IO_Expanders Functionalities
* (Touch Screen ..) and configures all STM32100E-EVAL necessary
* hardware (GPIOs, APB clocks ..).
* @param None
* @retval IOE_OK if all initializations done correctly. Other value if error.
*/
uint8_t IOE_Config(void)
{
IOE_StructInit();
IOE_Init();
/* Read IO Expander 1 ID */
if(IOE_IsOperational(IOE_1_ADDR))
{
return IOE1_NOT_OPERATIONAL;
}
/* Generate IOExpander Software reset */
IOE_Reset(IOE_1_ADDR);
/* ---------------------- IO Expander configuration --------------------- */
/* Enable the GPIO, Touch Screen and ADC functionalities */
IOE_FnctCmd(IOE_1_ADDR, IOE_ADC_FCT | IOE_IO_FCT , ENABLE);
/* Touch Screen controller configuration */
IOE_TS_Config();
/* Temperature Sensor configuration */
IOE_TempSens_Config();
/* Configuration is OK */
return IOE_OK;
}
/**
* @brief Configures and enables the Temperature sensor module.
* @param None
* @retval IOE_OK if all initializations are OK. Other value if error.
*/
uint8_t IOE_TempSens_Config(void)
{
/* Enable Temperature Sensor Fct */
IOE_FnctCmd(IOE_1_ADDR, (IOE_TEMPSENS_FCT | IOE_ADC_FCT), ENABLE);
/* Enable the TEMPSENS module */
I2C_WriteDeviceRegister(IOE_1_ADDR, IOE_REG_TEMP_CTRL, 0x01);
/* Acquire data enable */
I2C_WriteDeviceRegister(IOE_1_ADDR, IOE_REG_TEMP_CTRL, 0x3);
/* All configuration done */
return IOE_OK;
}
/**
* @brief Configures the touch Panel Controller (Single point detection)
* @param None
* @retval IOE_OK if all initializations are OK. Other value if error.
*/
uint8_t IOE_TP_Config(void)
{
/* Enable touch Panel functionality */
IOE_FnctCmd(IOE_TP_FCT, ENABLE);
/* Select Sample Time, bit number and ADC Reference */
I2C_WriteDeviceRegister(IOE_REG_ADC_CTRL1, 0x49);
/* Wait for ~20 ms */
_delay_(2);
/* Select the ADC clock speed: 3.25 MHz */
I2C_WriteDeviceRegister(IOE_REG_ADC_CTRL2, 0x01);
/* Select TSC pins in non default mode */
IOE_IOAFConfig((uint8_t)TOUCH_IO_ALL, DISABLE);
/* Select 2 nF filter capacitor */
I2C_WriteDeviceRegister(IOE_REG_TP_CFG, 0x9A);
/* Select single point reading */
I2C_WriteDeviceRegister(IOE_REG_FIFO_TH, 0x01);
/* Write 0x01 to clear the FIFO memory content. */
I2C_WriteDeviceRegister(IOE_REG_FIFO_STA, 0x01);
/* Write 0x00 to put the FIFO back into operation mode */
I2C_WriteDeviceRegister(IOE_REG_FIFO_STA, 0x00);
/* set the data format for Z value: 7 fractional part and 1 whole part */
I2C_WriteDeviceRegister(IOE_REG_TP_FRACT_XYZ, 0x01);
/* set the driving capability of the device for TSC pins: 50mA */
I2C_WriteDeviceRegister(IOE_REG_TP_I_DRIVE, 0x01);
/* Use no tracking index, touch-panel controller operation mode (XYZ) and
enable the TSC */
I2C_WriteDeviceRegister(IOE_REG_TP_CTRL, 0x03);
/* Clear all the status pending bits */
I2C_WriteDeviceRegister(IOE_REG_INT_STA, 0xFF);
/* Initialize the TS structure to their default values */
TP_State.TouchDetected = TP_State.X = TP_State.Y = TP_State.Z = 0;
/* All configuration done */
return IOE_OK;
}
/**
* @brief Initializes the IO Expander registers.
* @param None
* @retval - 0: if all initializations are OK.
*/
uint32_t GL_TSC_Interface_Init(void)
{
#if TOUCH_SCREEN_CAPABILITY
/* Configure the needed pins */
TSC_GPIO_Configuration();
/* Read IO Expander 1 ID */
if(IOE_IsOperational(pTscHwParam.TSC_DeviceRegister))
{
return 1;
}
/* Generate IOExpander Software reset */
IOE_Reset(pTscHwParam.TSC_DeviceRegister);
/* Disable all the Functionnalities */
IOE_FnctCmd(pTscHwParam.TSC_DeviceRegister, IOE_IO_FCT | IOE_TEMPSENS_FCT | IOE_TS_FCT | IOE_ADC_FCT, DISABLE);
#endif
return 0; /* Configuration is OK */
}
/**
* @brief Initializes and Configures the two IO_Expanders Functionalities
* (IOs, Touch Screen ..) and configures all STM3210C-EVAL necessary
* hardware (GPIOs, APB clocks ..).
* @param None
* @retval IOE_OK if all initializations done correctly. Other value if error.
*/
uint8_t IOE_Config(void)
{
/* Configure the needed pins */
IOE_GPIO_Config();
/* Configure the I2C peripheral */
IOE_I2C_Config();
/* Read IO Expander 1 ID */
if(IOE_IsOperational(IOE_1_ADDR))
{
return IOE1_NOT_OPERATIONAL;
}
if(IOE_IsOperational(IOE_2_ADDR))
{
return IOE2_NOT_OPERATIONAL;
}
/* Generate IOExpander Software reset */
IOE_Reset(IOE_1_ADDR);
IOE_Reset(IOE_2_ADDR);
/* ---------------------- IO Expander 1 configuration --------------------- */
/* Enable the GPIO, Touch Screen and ADC functionalities */
IOE_FnctCmd(IOE_1_ADDR, IOE_IO_FCT | IOE_TS_FCT | IOE_ADC_FCT, ENABLE);
/* Configure the VBAT pin in output mode pin*/
IOE_IOPinConfig(IOE_1_ADDR, VBAT_DIV_PIN , Direction_OUT);
/* ENABLE the alternate function for IN1 pin */
IOE_IOAFConfig(IOE_1_ADDR, VBAT_DIV_PIN, ENABLE);
/* Apply the default state for the out pins */
IOE_WriteIOPin(VBAT_DIV_PIN, BitReset);
/* Configure the MEMS interrupt pins in Input mode */
IOE_IOPinConfig(IOE_2_ADDR, (uint32_t)(MEMS_INT1_PIN | MEMS_INT2_PIN), Direction_IN);
/* ENABLE the alternate function for the Joystick pins */
IOE_IOAFConfig(IOE_2_ADDR, (uint32_t)(MEMS_INT1_PIN | MEMS_INT2_PIN), ENABLE);
/* Configure the IOs to detect Falling and Rising Edges */
IOE_IOEdgeConfig(IOE_2_ADDR, (uint32_t)(MEMS_INT1_PIN | MEMS_INT2_PIN), (uint32_t)(EDGE_FALLING | EDGE_RISING));
/* Touch Screen controller configuration */
IOE_TS_Config();
/* ------------------------------------------------------------------------ */
/* ---------------------- IO Expander 2 configuration --------------------- */
/* Enable the GPIO, Temperature Sensor and ADC functionalities */
IOE_FnctCmd(IOE_2_ADDR, IOE_IO_FCT | IOE_TEMPSENS_FCT | IOE_ADC_FCT, ENABLE);
/* Configure the Audio Codec Reset pin in output mode pin*/
IOE_IOPinConfig(IOE_2_ADDR, (uint32_t)(AUDIO_RESET_PIN), Direction_OUT);
IOE_IOPinConfig(IOE_2_ADDR, (uint32_t)(MII_INT_PIN), Direction_IN);
/* ENABLE the alternate function for IN1 pin */
IOE_IOAFConfig(IOE_2_ADDR, (uint32_t)(AUDIO_RESET_PIN | MII_INT_PIN), ENABLE);
/* Apply the default state for the out pins */
IOE_WriteIOPin(AUDIO_RESET_PIN, BitReset);
IOE_WriteIOPin(MII_INT_PIN, BitReset);
/* Configure the Joystick pins in Input mode */
IOE_IOPinConfig(IOE_2_ADDR, JOY_IO_PINS , Direction_IN);
/* ENABLE the alternate function for the Joystick pins */
IOE_IOAFConfig(IOE_2_ADDR, JOY_IO_PINS, ENABLE);
/* Configure the IOs to detect Falling and Rising Edges */
IOE_IOEdgeConfig(IOE_2_ADDR, JOY_IO_PINS, (uint8_t)(EDGE_FALLING | EDGE_RISING));
/* Temperature Sensor module configuration */
IOE_TempSens_Config();
/* ------------------------------------------------------------------------ */
/* Configuration is OK */
return IOE_OK;
}
