/**
* \internal
* \brief Send display commands to exit standby mode
*
* This function is used to exit the display standby mode, which is the default
* mode after a reset signal to the display.
*/
void ili9341_exit_standby(void)
{
ili9341_send_command(ILI9341_CMD_SLEEP_OUT);
ili9341_deselect_chip();
delay_ms(150);
ili9341_send_command(ILI9341_CMD_DISPLAY_ON);
ili9341_deselect_chip();
}
/**
* \brief Write the graphical memory with a single color pixel
*
* Use this function to write a single color pixel to the controller memory.
*
* Limits have to be set prior to calling this function, e.g.:
* \code
* ili9341_set_top_left_limit(0, 0);
* ili9341_set_bottom_right_limit(320, 240);
* ...
* \endcode
*
* \param color The color pixel to write to the screen
*/
void ili9341_write_gram(ili9341_color_t color)
{
/* Only 16-bit color supported */
Assert(sizeof(color) == 2);
ili9341_send_command(ILI9341_CMD_MEMORY_WRITE);
ili9341_send_byte(color);
ili9341_send_byte(color >> 8);
ili9341_wait_for_send_done();
ili9341_deselect_chip();
}
/**
* \internal
* \brief Helper function to send the drawing limits (boundaries) to the display
*
* This function is used to send the currently set upper-left and lower-right
* drawing limits to the display, as set through the various limit functions.
*
* \param send_end_limits True to also send the lower-right drawing limits
*/
static void ili9341_send_draw_limits(const bool send_end_limits)
{
ili9341_send_command(ILI9341_CMD_COLUMN_ADDRESS_SET);
ili9341_send_byte(limit_start_x >> 8);
ili9341_send_byte(limit_start_x & 0xFF);
if (send_end_limits) {
ili9341_send_byte(limit_end_x >> 8);
ili9341_send_byte(limit_end_x & 0xFF);
}
ili9341_wait_for_send_done();
ili9341_deselect_chip();
ili9341_send_command(ILI9341_CMD_PAGE_ADDRESS_SET);
ili9341_send_byte(limit_start_y >> 8);
ili9341_send_byte(limit_start_y & 0xFF);
if (send_end_limits) {
ili9341_send_byte(limit_end_y >> 8);
ili9341_send_byte(limit_end_y & 0xFF);
}
ili9341_wait_for_send_done();
ili9341_deselect_chip();
}
/**
* \brief Read a single color from the graphical memory
*
* Use this function to read a color from the graphical memory of the
* controller.
*
* Limits have to be set prior to calling this function, e.g.:
* \code
* ili9341_set_top_left_limit(0, 0);
* ili9341_set_bottom_right_limit(320, 240);
* ...
* \endcode
*
* \retval ili9341_color_t The read color pixel
*/
ili9341_color_t ili9341_read_gram(void)
{
uint8_t red, green, blue;
ili9341_send_command(ILI9341_CMD_MEMORY_READ);
/* No interesting data in the first byte, hence read and discard */
red = ili9341_read_byte();
red = ili9341_read_byte();
green = ili9341_read_byte();
blue = ili9341_read_byte();
ili9341_deselect_chip();
return ILI9341_COLOR(red, green, blue);
}
/**
* \brief Sets the orientation of the display data
*
* Configures the display for a given orientation, including mirroring and/or
* screen rotation.
*
* \param flags Orientation flags to use, see \ref ILI9341_FLIP_X, \ref ILI9341_FLIP_Y
* and \ref ILI9341_SWITCH_XY.
*/
void ili9341_set_orientation(uint8_t flags)
{
uint8_t madctl = 0x48;
if (flags & ILI9341_FLIP_X) {
madctl &= ~(1 << 6);
}
if (flags & ILI9341_FLIP_Y) {
madctl |= 1 << 7;
}
if (flags & ILI9341_SWITCH_XY) {
madctl |= 1 << 5;
}
ili9341_send_command(ILI9341_CMD_MEMORY_ACCESS_CONTROL);
ili9341_send_byte(madctl);
ili9341_wait_for_send_done();
ili9341_deselect_chip();
}
/**
* \brief Copy pixels from progmem to the screen
*
* This function can be used to copy data from program memory (flash) to the
* display.
*
* Limits have to be set prior to calling this function, e.g.:
* \code
* ili9341_set_top_left_limit(0, 0);
* ili9341_set_bottom_right_limit(320, 240);
* ...
* \endcode
*
* \param pixels Pointer to the progmem data
* \param count Number of pixels to write
*/
void ili9341_copy_progmem_pixels_to_screen(
ili9341_color_t PROGMEM_PTR_T pixels, uint32_t count)
{
ili9341_color_t color;
/* Sanity check to make sure that the pixel count is not zero */
Assert(count > 0);
ili9341_send_command(ILI9341_CMD_MEMORY_WRITE);
while (count--) {
color = PROGMEM_READ_WORD(pixels);
ili9341_send_byte(color);
ili9341_send_byte(color >> 8);
pixels++;
}
ili9341_wait_for_send_done();
ili9341_deselect_chip();
}
/**
* \brief Copy pixels from the screen to a pixel buffer
*
* Use this function to copy pixels from the display to an internal SRAM buffer.
*
* Limits have to be set prior to calling this function, e.g.:
* \code
* ili9341_set_top_left_limit(0, 0);
* ili9341_set_bottom_right_limit(320, 240);
* ...
* \endcode
*
* \param pixels Pointer to the pixel buffer to read to
* \param count Number of pixels to read
*/
void ili9341_copy_pixels_from_screen(ili9341_color_t *pixels, uint32_t count)
{
uint8_t red, green, blue;
/* Sanity check to make sure that the pixel count is not zero */
Assert(count > 0);
ili9341_send_command(ILI9341_CMD_MEMORY_READ);
/* No interesting data in the first byte, hence read and discard */
red = ili9341_read_byte();
while (count--) {
red = ili9341_read_byte();
green = ili9341_read_byte();
blue = ili9341_read_byte();
*pixels = ILI9341_COLOR(red, green, blue);
pixels++;
}
ili9341_deselect_chip();
}
/**
* \brief Sets the orientation of the display data
*
* Configures the display for a given orientation, including mirroring and/or
* screen rotation.
*
* \param flags Orientation flags to use, see \ref ILI9341_FLIP_X, \ref ILI9341_FLIP_Y
* and \ref ILI9341_SWITCH_XY.
*/
void ili9341_set_orientation(uint8_t flags)
{
uint8_t madctl = 0x48;
/* Pretend the display is in landscape mode by default to match other display drivers */
flags ^= ILI9341_SWITCH_XY | ILI9341_FLIP_X;
if (flags & ILI9341_FLIP_X) {
madctl &= ~(1 << 6);
}
if (flags & ILI9341_FLIP_Y) {
madctl |= 1 << 7;
}
if (flags & ILI9341_SWITCH_XY) {
madctl |= 1 << 5;
}
ili9341_send_command(ILI9341_CMD_MEMORY_ACCESS_CONTROL);
ili9341_send_byte(madctl);
ili9341_wait_for_send_done();
ili9341_deselect_chip();
}
/**
* \internal
* \brief Initialize the hardware interface to the controller
*
* This will initialize the module used for communication with the controller.
* Currently supported interfaces by this component driver are the SPI
* interface through either the SPI module in master mode or the USART in
* Master SPI mode. Configuration must be done in the associated
* conf_ili9341.h file.
*/
static void ili9341_interface_init(void)
{
#if defined(CONF_ILI9341_USART_SPI) || defined(CONF_ILI9341_SPI)
spi_flags_t spi_flags = SPI_MODE_0;
board_spi_select_id_t spi_select_id = 0;
#else
#error Interface for ILI9341 has not been selected or interface not\
supported, please configure component driver using the conf_ili9341.h\
file!
#endif
#if defined(CONF_ILI9341_USART_SPI)
struct usart_spi_device device = {
.id = 0,
};
usart_spi_init(CONF_ILI9341_USART_SPI);
usart_spi_setup_device(CONF_ILI9341_USART_SPI, &device, spi_flags,
CONF_ILI9341_CLOCK_SPEED, spi_select_id);
#elif defined(CONF_ILI9341_SPI)
struct spi_device device = {
.id = 0,
};
spi_master_init(CONF_ILI9341_SPI);
spi_master_setup_device(CONF_ILI9341_SPI, &device, spi_flags,
CONF_ILI9341_CLOCK_SPEED, spi_select_id);
spi_enable(CONF_ILI9341_SPI);
# if UC3
spi_set_chipselect(CONF_ILI9341_SPI, ~(1 << 0));
# if defined(ILI9341_DMA_ENABLED)
sysclk_enable_peripheral_clock(&AVR32_PDCA);
# endif
# endif
/* Send one dummy byte for the spi_is_tx_ok() to work as expected */
spi_write_single(CONF_ILI9341_SPI, 0);
#endif
}
/**
* \internal
* \brief Initialize all the display registers
*
* This function will set up all the internal registers according the the
* manufacturer's description.
*/
static void ili9341_controller_init_registers(void)
{
ili9341_send_command(ILI9341_CMD_POWER_CONTROL_A);
ili9341_send_byte(0x39);
ili9341_send_byte(0x2C);
ili9341_send_byte(0x00);
ili9341_send_byte(0x34);
ili9341_send_byte(0x02);
ili9341_wait_for_send_done();
ili9341_deselect_chip();
ili9341_send_command(ILI9341_CMD_POWER_CONTROL_B);
ili9341_send_byte(0x00);
ili9341_send_byte(0xAA);
ili9341_send_byte(0XB0);
ili9341_wait_for_send_done();
ili9341_deselect_chip();
ili9341_send_command(ILI9341_CMD_PUMP_RATIO_CONTROL);
ili9341_send_byte(0x30);
ili9341_wait_for_send_done();
ili9341_deselect_chip();
ili9341_send_command(ILI9341_CMD_POWER_CONTROL_1);
ili9341_send_byte(0x25);
ili9341_wait_for_send_done();
ili9341_deselect_chip();
ili9341_send_command(ILI9341_CMD_POWER_CONTROL_2);
ili9341_send_byte(0x11);
ili9341_wait_for_send_done();
ili9341_deselect_chip();
ili9341_send_command(ILI9341_CMD_VCOM_CONTROL_1);
ili9341_send_byte(0x5C);
ili9341_send_byte(0x4C);
ili9341_wait_for_send_done();
ili9341_deselect_chip();
ili9341_send_command(ILI9341_CMD_VCOM_CONTROL_2);
ili9341_send_byte(0x94);
ili9341_wait_for_send_done();
ili9341_deselect_chip();
ili9341_send_command(ILI9341_CMD_DRIVER_TIMING_CONTROL_A);
ili9341_send_byte(0x85);
ili9341_send_byte(0x01);
ili9341_send_byte(0x78);
ili9341_wait_for_send_done();
ili9341_deselect_chip();
ili9341_send_command(ILI9341_CMD_DRIVER_TIMING_CONTROL_B);
ili9341_send_byte(0x00);
ili9341_send_byte(0x00);
ili9341_wait_for_send_done();
ili9341_deselect_chip();
ili9341_send_command(ILI9341_CMD_COLMOD_PIXEL_FORMAT_SET);
ili9341_send_byte(0x05);
ili9341_wait_for_send_done();
ili9341_deselect_chip();
ili9341_set_orientation(0);
ili9341_set_limits(0, 0, ILI9341_DEFAULT_WIDTH,
ILI9341_DEFAULT_HEIGHT);
}
/**
* \internal
* \brief Send display commands to exit standby mode
*
* This function is used to exit the display standby mode, which is the default
* mode after a reset signal to the display.
*/
static void ili9341_exit_standby(void)
{
ili9341_send_command(ILI9341_CMD_SLEEP_OUT);
ili9341_deselect_chip();
delay_ms(150);
ili9341_send_command(ILI9341_CMD_DISPLAY_ON);
ili9341_deselect_chip();
}
/**
* \brief Set a given number of pixels to the same color
*
* Use this function to write a certain number of pixels to the same color
* within a set limit.
*
* Limits have to be set prior to calling this function, e.g.:
* \code
* ili9341_set_top_left_limit(0, 0);
* ili9341_set_bottom_right_limit(320, 240);
* ...
* \endcode
*
* \param color The color to write to the display
* \param count The number of pixels to write with this color
*/
void ili9341_duplicate_pixel(const ili9341_color_t color, uint32_t count)
{
/* Sanity check to make sure that the pixel count is not zero */
Assert(count > 0);
ili9341_send_command(ILI9341_CMD_MEMORY_WRITE);
#if defined(ILI9341_DMA_ENABLED)
ili9341_color_t chunk_buf[ILI9341_DMA_CHUNK_SIZE];
uint32_t chunk_len;
# if SAM
Pdc *SPI_DMA = spi_get_pdc_base(CONF_ILI9341_SPI);
pdc_packet_t spi_pdc_data;
pdc_enable_transfer(SPI_DMA, PERIPH_PTCR_TXTEN);
spi_pdc_data.ul_addr = (uint32_t)chunk_buf;
# elif UC3
pdca_set_transfer_size(CONF_ILI9341_PDCA_CHANNEL,
PDCA_TRANSFER_SIZE_BYTE);
pdca_set_peripheral_select(CONF_ILI9341_PDCA_CHANNEL,
CONF_ILI9341_PDCA_PID);
# endif
for (uint32_t i = 0; i < ILI9341_DMA_CHUNK_SIZE; i++) {
chunk_buf[i] = le16_to_cpu(color);
}
while (count)
{
chunk_len = min(ILI9341_DMA_CHUNK_SIZE, count);
ili9341_wait_for_send_done();
# if SAM
spi_pdc_data.ul_size = (uint32_t)sizeof(ili9341_color_t) * chunk_len;
pdc_tx_init(SPI_DMA, NULL, &spi_pdc_data);
# elif UC3
pdca_reload_channel(CONF_ILI9341_PDCA_CHANNEL, chunk_buf,
(uint32_t)sizeof(ili9341_color_t) * chunk_len);
pdca_enable(CONF_ILI9341_PDCA_CHANNEL);
# endif
count -= chunk_len;
}
ili9341_wait_for_send_done();
ili9341_deselect_chip();
# if SAM
pdc_disable_transfer(SPI_DMA, PERIPH_PTCR_TXTEN);
# elif UC3
pdca_disable(CONF_ILI9341_PDCA_CHANNEL);
# endif
#else
while (count--) {
ili9341_send_byte(color);
ili9341_send_byte(color >> 8);
}
ili9341_wait_for_send_done();
ili9341_deselect_chip();
#endif
}
/**
* \brief Copy pixels from SRAM to the screen
*
* Used to copy a large quantitative of data to the screen in one go.
*
* Limits have to be set prior to calling this function, e.g.:
* \code
* ili9341_set_top_left_limit(0, 0);
* ili9341_set_bottom_right_limit(320, 240);
* ...
* \endcode
*
* \param pixels Pointer to the pixel data
* \param count Number of pixels to copy to the screen
*/
void ili9341_copy_pixels_to_screen(const ili9341_color_t *pixels, uint32_t count)
{
const ili9341_color_t *pixel = pixels;
/* Sanity check to make sure that the pixel count is not zero */
Assert(count > 0);
ili9341_send_command(ILI9341_CMD_MEMORY_WRITE);
#if defined(ILI9341_DMA_ENABLED)
ili9341_color_t chunk_buf[ILI9341_DMA_CHUNK_SIZE];
uint32_t chunk_len;
# if SAM
Pdc *SPI_DMA = spi_get_pdc_base(CONF_ILI9341_SPI);
pdc_packet_t spi_pdc_data;
pdc_enable_transfer(SPI_DMA, PERIPH_PTCR_TXTEN);
spi_pdc_data.ul_addr = (uint32_t)chunk_buf;
# elif UC3
pdca_set_transfer_size(CONF_ILI9341_PDCA_CHANNEL,
PDCA_TRANSFER_SIZE_BYTE);
pdca_set_peripheral_select(CONF_ILI9341_PDCA_CHANNEL,
CONF_ILI9341_PDCA_PID);
# endif
while (count)
{
/* We need to copy out the data to send in chunks into RAM, as the PDC
* does not allow FLASH->Peripheral transfers */
chunk_len = min(ILI9341_DMA_CHUNK_SIZE, count);
/* Wait for pending transfer to complete */
ili9341_wait_for_send_done();
for (uint32_t i = 0; i < chunk_len; i++) {
chunk_buf[i] = le16_to_cpu(pixel[i]);
}
# if SAM
spi_pdc_data.ul_size = (uint32_t)sizeof(ili9341_color_t) * chunk_len;
pdc_tx_init(SPI_DMA, NULL, &spi_pdc_data);
# elif UC3
pdca_reload_channel(CONF_ILI9341_PDCA_CHANNEL, chunk_buf,
(uint32_t)sizeof(ili9341_color_t) * chunk_len);
pdca_enable(CONF_ILI9341_PDCA_CHANNEL);
# endif
pixel += chunk_len;
count -= chunk_len;
}
ili9341_wait_for_send_done();
ili9341_deselect_chip();
# if SAM
pdc_disable_transfer(SPI_DMA, PERIPH_PTCR_TXTEN);
# elif UC3
pdca_disable(CONF_ILI9341_PDCA_CHANNEL);
# endif
#else
while (count--) {
ili9341_send_byte(*pixel);
ili9341_send_byte(*pixel >> 8);
pixel++;
}
ili9341_wait_for_send_done();
ili9341_deselect_chip();
#endif
}
/**
* \internal
* \brief Initialize the hardware interface to the controller
*
* This will initialize the module used for communication with the controller.
* Currently supported interfaces by this component driver are the SPI
* interface through either the SPI module in master mode or the USART in
* Master SPI mode. Configuration must be done in the associated
* conf_ili9341.h file.
*/
static void ili9341_interface_init(void)
{
#if defined(CONF_ILI9341_USART_SPI) || defined(CONF_ILI9341_SPI)
spi_flags_t spi_flags = SPI_MODE_0;
board_spi_select_id_t spi_select_id = 0;
#else
#error Interface for ILI9341 has not been selected or interface not\
supported, please configure component driver using the conf_ili9341.h\
file!
#endif
#if defined(CONF_ILI9341_USART_SPI)
struct usart_spi_device device = {
.id = 0,
};
usart_spi_init(CONF_ILI9341_USART_SPI);
usart_spi_setup_device(CONF_ILI9341_USART_SPI, &device, spi_flags,
CONF_ILI9341_CLOCK_SPEED, spi_select_id);
#elif defined(CONF_ILI9341_SPI)
struct spi_device device = {
.id = 0,
};
spi_master_init(CONF_ILI9341_SPI);
spi_master_setup_device(CONF_ILI9341_SPI, &device, spi_flags,
CONF_ILI9341_CLOCK_SPEED, spi_select_id);
spi_enable(CONF_ILI9341_SPI);
# if UC3
spi_set_chipselect(CONF_ILI9341_SPI, ~(1 << 0));
# if defined(ILI9341_DMA_ENABLED)
sysclk_enable_peripheral_clock(&AVR32_PDCA);
# endif
# endif
/* Send one dummy byte for the spi_is_tx_ok() to work as expected */
spi_write_single(CONF_ILI9341_SPI, 0);
#endif
}
/**
* \internal
* \brief Initialize all the display registers
*
* This function will set up all the internal registers according the the
* manufacturer's description.
*/
static void ili9341_controller_init_registers(void)
{
ili9341_send_command(0xEF);
ili9341_send_byte(0x03);
ili9341_send_byte(0x80);
ili9341_send_byte(0x02);
ili9341_wait_for_send_done();
ili9341_deselect_chip();
ili9341_send_command(0xCF);
ili9341_send_byte(0x00);
ili9341_send_byte(0xC1);
ili9341_send_byte(0x30);
ili9341_wait_for_send_done();
ili9341_deselect_chip();
ili9341_send_command(0xED);
ili9341_send_byte(0x64);
ili9341_send_byte(0x03);
ili9341_send_byte(0x12);
ili9341_send_byte(0x81);
ili9341_wait_for_send_done();
ili9341_deselect_chip();
ili9341_send_command(0xE8);
ili9341_send_byte(0x85);
ili9341_send_byte(0x00);
ili9341_send_byte(0x78);
ili9341_wait_for_send_done();
ili9341_deselect_chip();
ili9341_send_command(0xCB);
ili9341_send_byte(0x39);
ili9341_send_byte(0x2C);
ili9341_send_byte(0x00);
ili9341_send_byte(0x34);
ili9341_send_byte(0x02);
ili9341_wait_for_send_done();
ili9341_deselect_chip();
ili9341_send_command(0xF7);
ili9341_send_byte(0x20);
ili9341_wait_for_send_done();
ili9341_deselect_chip();
ili9341_send_command(0xEA);
ili9341_send_byte(0x00);
ili9341_send_byte(0x00);
ili9341_wait_for_send_done();
ili9341_deselect_chip();
ili9341_send_command(0xC0);
ili9341_send_byte(0x23);
ili9341_wait_for_send_done();
ili9341_deselect_chip();
ili9341_send_command(0xC1);
ili9341_send_byte(0x10);
ili9341_wait_for_send_done();
ili9341_deselect_chip();
ili9341_send_command(0xC5);
ili9341_send_byte(0x3E);
ili9341_send_byte(0x28);
ili9341_wait_for_send_done();
ili9341_deselect_chip();
ili9341_send_command(0xC7);
ili9341_send_byte(0x86);
ili9341_wait_for_send_done();
ili9341_deselect_chip();
ili9341_send_command(0x36);
ili9341_send_byte(0x48);
ili9341_wait_for_send_done();
ili9341_deselect_chip();
ili9341_send_command(0x3A);
ili9341_send_byte(0x55);
ili9341_wait_for_send_done();
ili9341_deselect_chip();
ili9341_send_command(0xB1);
ili9341_send_byte(0x00);
ili9341_send_byte(0x18);
ili9341_wait_for_send_done();
ili9341_deselect_chip();
ili9341_send_command(0xB6);
ili9341_send_byte(0x08);
ili9341_send_byte(0x82);
ili9341_send_byte(0x27);
ili9341_wait_for_send_done();
ili9341_deselect_chip();
ili9341_send_command(0xF2);
ili9341_send_byte(0x00);
ili9341_wait_for_send_done();
ili9341_deselect_chip();
ili9341_send_command(0x26);
ili9341_send_byte(0x01);
ili9341_wait_for_send_done();
ili9341_deselect_chip();
ili9341_send_command(0xE0);
ili9341_send_byte(0x0F);
ili9341_send_byte(0x31);
ili9341_send_byte(0x2B);
ili9341_send_byte(0x0C);
ili9341_send_byte(0x0E);
ili9341_send_byte(0x08);
ili9341_send_byte(0x4E);
ili9341_send_byte(0xF1);
ili9341_send_byte(0x37);
ili9341_send_byte(0x07);
ili9341_send_byte(0x10);
ili9341_send_byte(0x03);
ili9341_send_byte(0x0E);
ili9341_send_byte(0x09);
ili9341_send_byte(0x00);
ili9341_wait_for_send_done();
ili9341_deselect_chip();
ili9341_send_command(0xE1);
ili9341_send_byte(0x00);
ili9341_send_byte(0x0E);
ili9341_send_byte(0x14);
ili9341_send_byte(0x03);
ili9341_send_byte(0x11);
ili9341_send_byte(0x07);
ili9341_send_byte(0x31);
ili9341_send_byte(0xC1);
ili9341_send_byte(0x48);
ili9341_send_byte(0x08);
ili9341_send_byte(0x0F);
ili9341_send_byte(0x0C);
ili9341_send_byte(0x31);
ili9341_send_byte(0x36);
ili9341_send_byte(0x0F);
ili9341_wait_for_send_done();
ili9341_deselect_chip();
// ili9341_send_command(ILI9341_CMD_POWER_CONTROL_A);
// ili9341_send_byte(0x39);
// ili9341_send_byte(0x2C);
// ili9341_send_byte(0x00);
// ili9341_send_byte(0x34);
// ili9341_send_byte(0x02);
// ili9341_wait_for_send_done();
// ili9341_deselect_chip();
// ili9341_send_command(ILI9341_CMD_POWER_CONTROL_B);
// ili9341_send_byte(0x00);
// ili9341_send_byte(0xAA);
// ili9341_send_byte(0XB0);
// ili9341_wait_for_send_done();
// ili9341_deselect_chip();
// ili9341_send_command(ILI9341_CMD_PUMP_RATIO_CONTROL);
// ili9341_send_byte(0x30);
// ili9341_wait_for_send_done();
// ili9341_deselect_chip();
// ili9341_send_command(ILI9341_CMD_POWER_CONTROL_1);
// ili9341_send_byte(0x25);
// ili9341_wait_for_send_done();
// ili9341_deselect_chip();
// ili9341_send_command(ILI9341_CMD_POWER_CONTROL_2);
// ili9341_send_byte(0x11);
// ili9341_wait_for_send_done();
// ili9341_deselect_chip();
// ili9341_send_command(ILI9341_CMD_VCOM_CONTROL_1);
// ili9341_send_byte(0x5C);
// ili9341_send_byte(0x4C);
// ili9341_wait_for_send_done();
// ili9341_deselect_chip();
// ili9341_send_command(ILI9341_CMD_VCOM_CONTROL_2);
// ili9341_send_byte(0x94);
// ili9341_wait_for_send_done();
// ili9341_deselect_chip();
// ili9341_send_command(ILI9341_CMD_DRIVER_TIMING_CONTROL_A);
// ili9341_send_byte(0x85);
// ili9341_send_byte(0x01);
// ili9341_send_byte(0x78);
// ili9341_wait_for_send_done();
// ili9341_deselect_chip();
// ili9341_send_command(ILI9341_CMD_DRIVER_TIMING_CONTROL_B);
// ili9341_send_byte(0x00);
// ili9341_send_byte(0x00);
// ili9341_wait_for_send_done();
// ili9341_deselect_chip();
// ili9341_send_command(ILI9341_CMD_COLMOD_PIXEL_FORMAT_SET);
// ili9341_send_byte(0x05);
// ili9341_wait_for_send_done();
// ili9341_deselect_chip();
ili9341_set_orientation(0);
ili9341_set_limits(0, 0, ILI9341_DEFAULT_WIDTH,
ILI9341_DEFAULT_HEIGHT);
}
void ili9341_enter_standby(void) {
ili9341_send_command(ILI9341_CMD_ENTER_SLEEP_MODE);
ili9341_deselect_chip();
}