//*****************************************************************************
//
// This function initializes the state of the button handler and prepares it
// to debounce the state of the button. If the button is initially pressed,
// the state of the motor controller is reverted to the factory settings.
//
//*****************************************************************************
void
ButtonInit(void)
{
//
// Set the GPIO as an input and enable the weak pull up. When pressed, the
// button is read as 0.
//
ROM_GPIODirModeSet(BUTTON_PORT, BUTTON_PIN, GPIO_DIR_MODE_IN);
ROM_GPIOPadConfigSet(BUTTON_PORT, BUTTON_PIN,
GPIO_STRENGTH_2MA, GPIO_PIN_TYPE_STD_WPU);
//
// Delay for a bit before sampling the reset state of the button.
//
SysCtlDelay(1000);
//
// Read the current state of the button and consider it to be the debounced
// state.
//
g_ulDebouncedState = ROM_GPIOPinRead(BUTTON_PORT, BUTTON_PIN);
//
// Reset the debounce and hold counters.
//
g_ulDebounceCount = BUTTON_DEBOUNCE_COUNT;
g_ulHoldCount = 0;
//
// See if the button was initially pressed.
//
if(g_ulDebouncedState == BUTTON_DOWN)
{
//
// Reset the parameters to the default values.
//
ParamLoadDefault();
//
// Save the default parameters.
//
ParamSave();
//
// Indicate that the configuration was just reset to the default
// settings.
//
LEDParameterReset();
//
// Set the hold count such that the power-on hold of the push button
// will not cause the servo calibration process to start.
//
g_ulHoldCount = BUTTON_HOLD_COUNT;
}
}
//*****************************************************************************
//
// This function initializes the parameter block. If there is a parameter
// block stored in flash, then those values will be used. Otherwise, the
// default parameter values will be used.
//
//*****************************************************************************
void
ParamInit(void)
{
//
// Initialize the flash parameter block driver.
//
FlashPBInit(FLASH_PB_START, FLASH_PB_END, FLASH_PB_SIZE);
//
// First, load the parameter block with the default values.
//
ParamLoadDefault();
//
// Then, if available, load the latest non-volatile set of values.
//
ParamLoad();
}
