//-----------------------------------------------------------------------------
// \brief initialize the lcd controller for raster use.
//
// \param none.
//
// \return uint32_t
// ERR_NO_ERROR - everything is ok...lcdc ready to use.
// ERR_INIT_FAIL - something happened during initialization.
//-----------------------------------------------------------------------------
uint32_t LIDD_init(void)
{
uint32_t rtn = ERR_NO_ERROR;
/* Enable the LCD Hardware */
EVMOMAPL138_lpscTransition(PSC1, DOMAIN0, LPSC_LCDC, PSC_ENABLE);
/* Set MUX_MODE on UI GPIO expander to LCD */
EVMOMAPL138_pinmuxConfig(PINMUX_LCD_D_BUS_0_REG, PINMUX_LCD_D_BUS_0_MASK, PINMUX_LCD_D_BUS_0_VALUE);
EVMOMAPL138_pinmuxConfig(PINMUX_LCD_D_BUS_1_REG, PINMUX_LCD_D_BUS_1_MASK, PINMUX_LCD_D_BUS_1_VALUE);
EVMOMAPL138_pinmuxConfig(PINMUX_LCD_D_BUS_2_REG, PINMUX_LCD_D_BUS_2_MASK, PINMUX_LCD_D_BUS_2_VALUE);
EVMOMAPL138_pinmuxConfig(PINMUX_LCD_CONTROL_0_REG, PINMUX_LCD_CONTROL_0_MASK, PINMUX_LCD_CONTROL_0_VALUE);
EVMOMAPL138_pinmuxConfig(PINMUX_LCD_CONTROL_1_REG, PINMUX_LCD_CONTROL_1_MASK, PINMUX_LCD_CONTROL_1_VALUE);
/*
* LCD Panel
* 8.824 MHz, raster mode pixel clock, 480-272 viewable frame
*/
LCD_RASTER_CTRL &= 0xfffffffe; // Turn raster controller off
LCD_LIDD_CTRL = 0x0000000C; // LIDD mode 0x4
LCD_LCD_STAT = 0x000003ff; // Clear status bits
LCD_LCD_CTRL = 0x00002500; // PCLK = 150MHz / 37 = 4.054 MHz, LIDD mode
LCD_LIDD_CS0_CONF = 0xF7DCE3BA;
//F 7 D C E 3 B A
//1111 0111 1101 1100 1110 0011 1011 1010
//gggg gfff fffe eeed dddd cccc ccbb bbaa
//////////////////////////////////////////////////
// Enable the Char LCD
//////////////////////////////////////////////////
// enable video (active low) via gpio expander and disable rmii phy to
// ensure we have exclusive access to the bus.
// TODO: need to update for new board rev.
rtn = I2CGPIO_init(I2C_ADDR_GPIO_UI);
if (rtn != ERR_NO_ERROR)
return (ERR_NO_UI_BOARD);
/*
rtn = EMAC_init(EMAC_INTERFACE_RMII);
rtn |= EMAC_phyPowerDown();
if (rtn != ERR_NO_ERROR)
return (rtn);
*/
// make sure we are getting a 27MHz clock.
rtn = CDCE913_init();
rtn |= I2CGPIO_setOutput(I2C_ADDR_GPIO_UI, I2C_GPIO_UI_ETHER_PGM_ENn, 1);
rtn |= I2CGPIO_setOutput(I2C_ADDR_GPIO_UI, I2C_GPIO_UI_SELA, 0);
rtn |= I2CGPIO_setOutput(I2C_ADDR_GPIO_UI, I2C_GPIO_UI_SELB, 0);
rtn |= I2CGPIO_setOutput(I2C_ADDR_GPIO_UI, I2C_GPIO_UI_SELC, 0);
return (rtn);
}
void SetGpio(void)
{
uint32_t errchk;
EVMOMAPL138_pinmuxConfig(PINMUX_MCASP_REG_17,PINMUX_MCASP_MASK_17,PINMUX_MCASP_VAL_17);
errchk=GPIO_setDir(GPIO_BANK7,GPIO_PIN7,GPIO_OUTPUT);
}
//-----------------------------------------------------------------------------
// \brief initialize the given spi port.
//
// \param spi_regs_t *spi - pointer to reg struct for the desired spi port.
//
// \param spi_config_t *in_config - desired spi configuration.
//
// \return uint32_t
// ERR_NO_ERROR - everything is ok...spi ready to use.
// ERR_INIT_FAIL - something happened during initialization.
//-----------------------------------------------------------------------------
uint32_t SPI_init(spi_regs_t *spi, spi_config_t *in_config)
{
uint32_t rtn = ERR_INIT_FAIL;
// enable the psc and config pinmux for the given spi port.
switch ((uint32_t)spi)
{
case SPI0_REG_BASE:
EVMOMAPL138_lpscTransition(PSC0, DOMAIN0, LPSC_SPI0, PSC_ENABLE);
EVMOMAPL138_pinmuxConfig(PINMUX_SPI0_REG_0, PINMUX_SPI0_MASK_0, PINMUX_SPI0_VAL_0);
EVMOMAPL138_pinmuxConfig(PINMUX_SPI0_REG_1, PINMUX_SPI0_MASK_1, PINMUX_SPI0_VAL_1);
break;
case SPI1_REG_BASE:
EVMOMAPL138_lpscTransition(PSC1, DOMAIN0, LPSC_SPI1, PSC_ENABLE);
EVMOMAPL138_pinmuxConfig(PINMUX_SPI1_REG, PINMUX_SPI1_MASK, PINMUX_SPI1_VAL);
break;
default:
return (ERR_INIT_FAIL);
}
if (in_config != NULL)
{
uint32_t prescaler;
// reset spi port.
spi->SPIGCR0 = 0;
USTIMER_delay(5);
SETBIT(spi->SPIGCR0, RESET);
// config master/slave mode.
if (SPI_MODE_MASTER == in_config->mode)
{
// set clkmod and master for master mode.
spi->SPIGCR1 = CLKMOD | MASTER;
}
else if (SPI_MODE_SLAVE == in_config->mode)
{
// clear spigcr1 for slave mode.
spi->SPIGCR1 = 0;
}
else
{
return (ERR_INIT_FAIL);
}
// config pin options.
switch (in_config->pin_option)
{
case SPI_3PIN:
// enable spi SOMI, SIMO, and CLK.
spi->SPIPC0 = SOMI | SIMO | CLK;
// config SCS0 as gpio output.
SETBIT(spi->SPIPC1, SCS0);
break;
case SPI_4PIN_CS:
// enable spi SOMI, SIMO, CLK, and SCS0.
spi->SPIPC0 = SOMI | SIMO | CLK | SCS0;
break;
case SPI_4PIN_EN:
// enable spi SOMI, SIMO, CLK, and ENA.
spi->SPIPC0 = SOMI | SIMO | CLK | ENA;
break;
case SPI_5PIN:
// enable spi SOMI, SIMO, CLK, SCS0, and ENA.
spi->SPIPC0 = SOMI | SIMO | CLK | ENA | SCS0;
break;
default:
return (ERR_INIT_FAIL);
}
// config the cs active...high or low.
spi->SPIDEF = 0;
if (SPI_CS_ACTIVE_LOW == in_config->cs_active)
{
// clear csnr for active low and set cs default to 1.
spi->SPIDAT1 = 0;
SETBIT(spi->SPIDEF, CSDEF0);
}
else if (SPI_CS_ACTIVE_HIGH == in_config->cs_active)
{
// set csnr for active high and set cs default to 0.
spi->SPIDAT1 = 0;
SETBIT(spi->SPIDAT1, CSNR);
}
else
{
return (ERR_INIT_FAIL);
}
// config spi direction, polarity, and phase.
spi->SPIFMT0 = 0;
if (SPI_SHIFT_LSB == in_config->shift_dir)
{
SETBIT(spi->SPIFMT0, SHIFTDIR);
}
if (in_config->polarity)
{
SETBIT(spi->SPIFMT0, POLARITY);
}
if (in_config->phase)
{
SETBIT(spi->SPIFMT0, PHASE);
}
// set the prescaler and character length.
prescaler = (((SYSCLOCK2_HZ / in_config->freq) - 1) & 0xFF);
#ifdef DEBUG
printf("desired spi freq: %u\r\n", in_config->freq);
printf("spi sysclock: %u\r\n", SYSCLOCK2_HZ);
printf("prescaler set to: %u\r\n", prescaler);
#endif
SETBIT(spi->SPIFMT0, (prescaler << SHIFT_PRESCALE));
SETBIT(spi->SPIFMT0, (DEFAULT_CHAR_LEN << SHIFT_CHARLEN));
spi->SPIDELAY = (8 << 24) | (8 << 16);
// disable interrupts.
spi->SPIINT = 0x00;
spi->SPILVL = 0x00;
// enable spi.
SETBIT(spi->SPIGCR1, ENABLE);
rtn = ERR_NO_ERROR;
}
return (rtn);
}
