void backlight_hw_off(void)
{
backlight_hw_brightness(0);
#ifdef HAVE_LCD_ENABLE
lcd_enable(false); /* power off visible display */
#endif
}
void backlight_hw_on(void)
{
/* configure backlight pin P0.0 as timer PWM output */
PCON0 = ((PCON0 & ~(3 << 0)) | (2 << 0));
backlight_hw_brightness(backlight_brightness);
}
void system_exception_wait(void)
{
backlight_hw_on();
backlight_hw_brightness(DEFAULT_BRIGHTNESS_SETTING);
/* wait until button press and release */
while(button_read_device() != 0) {}
while(button_read_device() == 0) {}
while(button_read_device() != 0) {}
while(button_read_device() == 0) {}
}
void backlight_hw_on(void)
{
#ifdef HAVE_LCD_ENABLE
lcd_enable(true); /* power on lcd + visible display */
#endif
#if (CONFIG_BACKLIGHT_FADING != BACKLIGHT_FADING_SW_SETTING) /* in bootloader/sim */
/* if we set the brightness to the settings value, then fading up
* is glitchy */
backlight_hw_brightness(backlight_brightness);
#endif
}
void system_exception_wait(void)
{
/* stop hadrware watchdog, IRQs are stopped */
imx233_rtc_enable_watchdog(false);
/* make sure lcd and backlight are on */
lcd_update();
backlight_hw_on();
backlight_hw_brightness(DEFAULT_BRIGHTNESS_SETTING);
/* wait until button release (if a button is pressed)
* NOTE at this point, interrupts are off so that rules out touchpad and
* ADC, so we are pretty much left with PSWITCH only. If other buttons are
* wanted, it is possible to implement a busy polling version of button
* reading for GPIO and ADC in button-imx233 but this is not done at the
* moment. */
while(imx233_power_read_pswitch() != 0) {}
while(imx233_power_read_pswitch() == 0) {}
while(imx233_power_read_pswitch() != 0) {}
}
void system_exception_wait(void)
{
/* stop hadrware watchdog, IRQs are stopped */
imx233_rtc_enable_watchdog(false);
/* make sure lcd and backlight are on */
lcd_update();
backlight_hw_on();
backlight_hw_brightness(DEFAULT_BRIGHTNESS_SETTING);
/* wait until button release (if a button is pressed) */
#ifdef HAVE_BUTTON_DATA
int data;
while(button_read_device(&data));
/* then wait until next button press */
while(!button_read_device(&data));
#else
while(button_read_device());
/* then wait until next button press */
while(!button_read_device());
#endif
}
bool backlight_hw_init(void)
{
short read_value;
IO_GIO_BITCLR2 = (1 << 5); /* output low (backlight/lcd on) */
spi_block_transfer(SPI_target_BACKLIGHT, commands[6], 2, 0, 0);
spi_block_transfer(SPI_target_BACKLIGHT, commands[8], 2, (char*)&read_value, 2);
if( (read_value & 0xFF) < 0xD0 )
{
spi_block_transfer(SPI_target_BACKLIGHT, commands[3], 2, 0, 0);
spi_block_transfer(SPI_target_BACKLIGHT, commands[4], 2, 0, 0);
spi_block_transfer(SPI_target_BACKLIGHT, commands[9], 2, 0, 0);
spi_block_transfer(SPI_target_BACKLIGHT, commands[0], 2, 0, 0);
}
spi_block_transfer(SPI_target_BACKLIGHT, commands[2], 2, 0, 0);
backlight_hw_brightness(backlight_brightness);
return true;
}
bool backlight_hw_init(void)
{
backlight_hw_on();
backlight_hw_brightness(DEFAULT_BRIGHTNESS_SETTING);
return true;
}
void __backlight_dim(bool dim_now)
{
backlight_hw_brightness(dim_now ?
DEFAULT_BRIGHTNESS_SETTING :
DEFAULT_DIMNESS_SETTING);
}
