static inline void pic32mx_uartinitialize(void)
{
#ifdef CONFIG_PIC32MX_UART2
/* Make sure that TRIS pins are set correctly. Configure the UART pins as digital
* inputs and outputs first.
*/
pic32mx_configgpio(GPIO_U2TX);
pic32mx_configgpio(GPIO_U2RX);
/* Configure UART TX and RX pins to RPB10 and 11, respectively */
putreg32(PPS_INSEL_RPB11, PIC32MX_PPS_U2RXR);
putreg32(PPS_OUTSEL_U2TX, PIC32MX_PPS_RPB10R);
#endif
#ifdef CONFIG_PIC32MX_UART1
/* Make sure that TRIS pins are set correctly. Configure the UART pins as digital
* inputs and outputs first.
*/
pic32mx_configgpio(GPIO_U1TX);
pic32mx_configgpio(GPIO_U1RX);
/* Configure UART TX and RX pins to RPB10 and 11, respectively */
putreg32(PPS_INSEL_RPC6, PIC32MX_PPS_U1RXR);
putreg32(PPS_OUTSEL_U1TX, PIC32MX_PPS_RPC5R);
#endif
}
void pic32mx_ledinit(void)
{
/* Configure output pins */
pic32mx_configgpio(GPIO_LED_0);
pic32mx_configgpio(GPIO_LED_1);
}
void pic32mx_led_initialize(void)
{
/* Configure output pins */
pic32mx_configgpio(GPIO_LED_0);
pic32mx_configgpio(GPIO_LED_1);
pic32mx_configgpio(GPIO_LED_2);
}
void board_userled_initialize(void)
{
/* Configure output pins */
pic32mx_configgpio(GPIO_LED_1);
pic32mx_configgpio(GPIO_LED_2);
pic32mx_configgpio(GPIO_LED_3);
}
void pic32mx_ledinit(void)
{
/* Configure output pins */
pic32mx_configgpio(GPIO_USB_LED);
pic32mx_configgpio(GPIO_SD_LED);
pic32mx_configgpio(GPIO_FLASH_LED);
pic32mx_configgpio(GPIO_ERROR_LED);
}
void weak_function pic32mx_spiinitialize(void)
{
/* Configure the SPI chip select, write protect, and card detect GPIOs */
#ifdef CONFIG_PIC32MX_SPI1
pic32mx_configgpio(GPIO_SD_CS);
pic32mx_configgpio(GPIO_SD_WP);
pic32mx_configgpio(GPIO_SD_CD);
#endif
}
void pic32mx_lcdinitialize(void)
{
/* Just configure the backlight control as an output and turn off the
* backlight for now.
*/
pic32mx_configgpio(GPIO_BLED);
}
void weak_function pic32mx_spiinitialize(void)
{
/* Configure the SPI2 chip select (CS) GPIO output, and the card detect (CD) and
* write protect (WP) inputs.
*/
#ifdef PIC32_HAVE_SD
pic32mx_configgpio(GPIO_SD_CS);
pic32mx_configgpio(GPIO_SD_CD);
pic32mx_configgpio(GPIO_SD_WD);
#endif
#ifdef PIC32_HAVE_SOIC
pic32mx_configgpio(GPIO_SOIC_WP);
pic32mx_configgpio(GPIO_SOIC_CS);
#endif
}
xcpt_t pic32mx_gpioattach(uint32_t pinset, unsigned int cn, xcpt_t handler)
{
xcpt_t oldhandler = NULL;
irqstate_t flags;
DEBUGASSERT(cn < IOPORT_NUMCN);
/* First verify that the pinset is configured as an interrupting input */
if (pic32mx_input(pinset) && pic32mx_interrupt(pinset))
{
/* Get the previously attached handler as the return value */
flags = irqsave();
oldhandler = g_cnisrs[cn];
/* Are we attaching or detaching? */
if (handler != NULL)
{
/* Attaching... Make sure that the GPIO is properly configured as
* an input
*/
pic32mx_configgpio(pinset);
/* Pull-up requested? */
if (pic32mx_pullup(pinset))
{
putreg32(1 << cn, PIC32MX_IOPORT_CNPUESET);
}
else
{
putreg32(1 << cn, PIC32MX_IOPORT_CNPUECLR);
}
}
else
{
/* Make sure that any further interrupts are disabled.
* (disable the pull-up as well).
*/
putreg32(1 << cn, PIC32MX_IOPORT_CNENCLR);
putreg32(1 << cn, PIC32MX_IOPORT_CNPUECLR);
}
/* Set the new handler (perhaps NULLifying the current handler) */
g_cnisrs[cn] = handler;
irqrestore(flags);
}
return oldhandler;
}
void weak_function pic32mx_spi2initialize(void)
{
/* Make sure that TRIS pins are set correctly. Configure the SPI pins as digital
* inputs and outputs first.
*/
pic32mx_configgpio(GPIO_SI);
pic32mx_configgpio(GPIO_SO);
pic32mx_configgpio(GPIO_SCK);
/* Configure SPI2 data in and data out to use RPA2 and 1, respectively */
putreg32(PPS_INSEL_RPA2, PIC32MX_PPS_SDI2R);
putreg32(PPS_OUTSEL_SDO2, PIC32MX_PPS_RPA1R);
/* Configure the SPI chip select GPIOs */
pic32mx_configgpio(GPIO_PGA117_CS);
pic32mx_configgpio(GPIO_SST25VF032B_CS);
}
void board_button_initialize(void)
{
int i;
/* Configure input pins */
for (i = 0; i < NUM_BUTTONS; i++)
{
pic32mx_configgpio(g_buttonset[i]);
}
}
void board_button_initialize(void)
{
int i;
/* Configure input pins */
for (i = 0; i < NUM_BUTTONS; i++)
{
pic32mx_configgpio(g_buttonset[i]);
}
/* Change AN2/AN3/AN4 to digital */
putreg32(0xffff, PIC32MX_ADC_CFG);
}
int up_lcd1602_initialize(void)
{
int ret = OK;
/* Only initialize the driver once. */
if (!g_lcd1602.initialized)
{
lcdinfo("Initializing\n");
/* Configure GPIO pins */
putreg16(0, PIC32MX_IOPORTE_TRIS); /* Set DB0-15 as outputs */
pic32mx_configgpio(GPIO_LCD_RS); /* RS: Selects commnand or data */
pic32mx_configgpio(GPIO_LCD_RW); /* RW: Selects read or write */
pic32mx_configgpio(GPIO_LCD_E); /* E: Starts transfer */
/* Configure LCD power in the OFF state */
pic32mx_configgpio(GPIO_LCD_LIGHT); /* K */
pic32mx_configgpio(GPIO_LCD_COMP); /* Vo */
pic32mx_configgpio(GPIO_LCD_PWR); /* Vbuson/AN5/RB5 controls +5V USB */
g_lcd1602.brightness = 0; /* Remember tht the light is off */
/* A small delay is necessary between when GPIO_LCD_E was set up as an
* output with initial value of 0 and this operation. That delay should
* be well covered by the intervening GPIO configurations.
*/
pic32mx_gpiowrite(GPIO_LCD_E, true); /* Enable transfer */
/* Configure and enable the LCD */
/* Delay for 4.1MS or more */
up_mdelay(5);
/* Select the 8-bit interface. BF cannot be checked before this command.
* This needs to be done a few times with some magic delays.
*
* Function set: 5x7 Style | N=2R | DL=8D
*/
lcd_wrcommand(HD4478OU_FUNC | HD4478OU_FUNC_F5x7 | HD4478OU_FUNC_N1 | HD4478OU_FUNC_DL8D);
up_udelay(100); /* Delay more than 100uS */
lcd_wrcommand(HD4478OU_FUNC | HD4478OU_FUNC_F5x7 | HD4478OU_FUNC_N1 | HD4478OU_FUNC_DL8D);
up_udelay(40); /* Delay more than 40uS */
lcd_wrcommand(HD4478OU_FUNC | HD4478OU_FUNC_F5x7 | HD4478OU_FUNC_N1 | HD4478OU_FUNC_DL8D);
lcd_waitbusy();
lcd_wrcommand(HD4478OU_FUNC | HD4478OU_FUNC_F5x7 | HD4478OU_FUNC_N1 | HD4478OU_FUNC_DL8D);
lcd_waitbusy();
/* Display ON, cursor OFF, blink OFF */
lcd_wrcommand(HD4478OU_DISPLAY | HD4478OU_DISPLAY_ON);
lcd_waitbusy();
/* Clear the display and home the cursor */
lcd_wrcommand(HD4478OU_CLEAR); /* Clear display */
lcd_waitbusy();
lcd_wrcommand(HD4478OU_RETURN); /* Return home: AC=0 */
lcd_waitbusy();
/* Entry Mode Set:
*
* - Increment address by one,
* - Shift cursor to right (display is not shifted)
*/
lcd_wrcommand(HD4478OU_INPUT | HD4478OU_INPUT_INCR);
/* Register the LCD device driver */
ret = register_driver("/dev/lcd1602", &g_lcdops, 0644, &g_lcd1602);
g_lcd1602.initialized = true;
}
return ret;
}