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Fix SAM34 interrupt handling for ports D-F; fix MISO logic in Arduino Due touchscreen driver

This commit is contained in:
Gregory Nutt 2013-07-03 08:12:45 -06:00
parent c8a4f69a69
commit 242b459b05
3 changed files with 57 additions and 35 deletions
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21
configs/arduino-due/README.txt
View File

@ -35,11 +35,11 @@ PIO Pin Usage
----- ---------- ---- -------- ----- ------------ ---- ------ ----- ----------- ---- ---------
PA0 CANTX0 ADCH 8 PB0 ETX_CLK ETH 1 PC0 ERASE N/A
PA1 CANRX0 ACDH 7 PB1 ETX_EN ETH 3 PC1 PIN33 XIO 14
PA2 AD7 ADCL 7 PB2 ETXD0 ETH 5 PC2 PIN34 XIO 15
PA3 AD6 ADCL 6 PB3 ETXD1 ETH 7 PC3 PIN35 XIO 16
PA4 AD5 ADCL 5 PB4 ERX_DV ETH 10 PC4 PIN36 XIO 17
PA2 AD7 ADCL 8 PB2 ETXD0 ETH 5 PC2 PIN34 XIO 15
PA3 AD6 ADCL 7 PB3 ETXD1 ETH 7 PC3 PIN35 XIO 16
PA4 AD5 ADCL 6 PB4 ERX_DV ETH 10 PC4 PIN36 XIO 17
PA5 EEXTINT ETH 8 PB5 ERXD0 ETH 9 PC5 PIN37 XIO 18
PA6 AD4 ADCL 4 PB6 ERXD1 ETH 11 PC6 PIN38 XIO 19
PA6 AD4 ADCL 5 PB6 ERXD1 ETH 11 PC6 PIN38 XIO 19
PA7 PIN31 XIO 12 PB7 ERX_ER ETH 13 PC7 PIN39 XIO 20
PA8 [U]RX PWML 1 PB8 EMDC ETH 14 PC8 PIN40 XIO 21
PA9 [U]TX PWML 2 PB9 EMDIO ETH 12 PC9 PIN41 XIO 22
@ -49,15 +49,15 @@ PIO Pin Usage
PA13 TXD1 COMM 3 PB13 SCL0-3 COMM 8 PC13 PIN50 XIO 31
PA14 PIN23 XIO 4 PB14 CANTX1/IO XIO 34 PC14 PIN49 XIO 30
PA15 PIN24 XIO 5 PB15 DAC0(CANRX1) ADCH 5 PC15 PIN48 XIO 29
PA16 AD0 ADCL 0 PB16 DAC1 ADCH 6 PC16 PIN47 XIO 28
PA16 AD0 ADCL 1 PB16 DAC1 ADCH 6 PC16 PIN47 XIO 28
PA17 SDA1 PWMH 9 PB17 AD8 ADCH 1 PC17 PIN46 XIO 27
PA18 SCL1 PWMH 10 PB18 AD9 ADCH 2 PC18 PIN45 XIO 26
PA19 PIN42 XIO 23 PB19 AD10 ADCH 3 PC19 PIN44 XIO 25
PA20 PIN43 XIO 24 PB20 AD11(TXD3) ADCH 4 PC20 N/C N/A
PA21 TXL TX YELLOW LED PB21 AD14(RXD3) XIO 33 PC21 PWM9 PWMH 2
PA22 AD3 ADCL 3 PB22 N/C N/A PC22 PWM8 PWMH 1
PA23 AD2 ADCL 2 PB23 SS3 ??? PC23 PWM7 PWML 8
PA24 AD1 ADCL 1 PB24 N/C N/A PC24 PWM6 PWML 7
PA22 AD3 ADCL 4 PB22 N/C N/A PC22 PWM8 PWMH 1
PA23 AD2 ADCL 3 PB23 SS3 ??? PC23 PWM7 PWML 8
PA24 AD1 ADCL 2 PB24 N/C N/A PC24 PWM6 PWML 7
PA25 MISO SPI 1 PB25 PWM2 PWML 3 PC25 PWM5 PWML 6
PA26 MOSI SPI 4 PB26 PIN22 ??? PC26 SS1/PWM4 PWML 10 (there are two)
PA27 SPCK SPI 3 PB27 PWM13 PWMH 6 PC27 N/C N/A
@ -178,6 +178,7 @@ ITEAD 2.4" TFT with Touch
NOTES:
1. It is not possible to use any of the SPI devices on the Shield unless
a bit-bang SPI interface is used. This includes the touch controller
a bit-bang SPI interface is used. This includes the touch controller
and the SD card.
2. UART0 cannot be used. USARTs on the COMM connector should be available.
@ -218,8 +219,8 @@ ITEAD 2.4" TFT with Touch
7 IN3 N/C --- --- 8 IN4 N/C --- ---
9 VREF --- --- --- 10 VCC --- --- ---
11 IRQ J2 pin 2 D9 PC21 12 DOUT J2 pin 1 D8 PC22
13 BUSY N/C --- --- 14 DIN J1 pin 1 D14 PA16
15 /CS --- --- --- 16 DCLK J1 pin 2 D15 PA24
13 BUSY N/C --- --- 14 DIN J1 pin 1 A0/D15 PA16
15 /CS --- --- --- 16 DCLK J1 pin 2 A1/D15 PA24
--- ------- -------- --------- -------- ---- -------- -------- --------- -------
NOTES:

4
configs/arduino-due/src/arduino-due.h
View File

@ -232,8 +232,8 @@
* 7 IN3 N/C --- --- 8 IN4 N/C --- ---
* 9 VREF --- --- --- 10 VCC --- --- ---
* 11 IRQ J2 pin 2 D9 PC21 12 DOUT J2 pin 1 D8 PC22
* 13 BUSY N/C --- --- 14 DIN J1 pin 1 D14 PA16
* 15 /CS --- --- --- 16 DCLK J1 pin 2 D15 PA24
* 13 BUSY N/C --- --- 14 DIN J1 pin 1 A0/D14 PA16
* 15 /CS --- --- --- 16 DCLK J1 pin 2 A1/D15 PA24
* --- ------- -------- --------- -------- ---- -------- -------- --------- -------
*
* NOTE: /CS is connected to ground (XPT2046 is always selected)

67
configs/arduino-due/src/sam_touchscreen.c
View File

@ -91,7 +91,7 @@
#define SPI_CLRSCK putreg32(1 << 24, SAM_PIOA_CODR)
#define SPI_SETMOSI putreg32(1 << 16, SAM_PIOA_SODR)
#define SPI_CLRMOSI putreg32(1 << 16, SAM_PIOA_CODR)
#define SPI_GETMISO ((getreg32(SAM_PIOC_PDSR) >> 21) & 1)
#define SPI_GETMISO ((getreg32(SAM_PIOC_PDSR) >> 22) & 1)
/* Only mode 0 */
@ -174,6 +174,7 @@ static struct ads7843e_config_s g_tscinfo =
/****************************************************************************
* Private Functions
****************************************************************************/
/****************************************************************************
* Include the bit-band skeleton logic
****************************************************************************/
@ -354,36 +355,50 @@ static FAR struct spi_dev_s *sam_tsc_spiinitialize(void)
int arch_tcinitialize(int minor)
{
FAR struct spi_dev_s *dev;
static bool initialized = false;
int ret;
idbg("minor %d\n", minor);
DEBUGASSERT(minor == 0);
/* Configure and enable the XPT2046 interrupt pin as an input */
/* Have we already initialized? Since we never uninitialize we must prevent
* multiple initializations. This is necessary, for example, when the
* touchscreen example is used as a built-in application in NSH and can be
* called numerous time. It will attempt to initialize each time.
*/
(void)sam_configgpio(GPIO_TSC_IRQ);
/* Configure the PIO interrupt */
sam_gpioirq(SAM_TSC_IRQ);
/* Get an instance of the SPI interface for the touchscreen chip select */
dev = sam_tsc_spiinitialize();
if (!dev)
if (!initialized)
{
idbg("Failed to initialize bit bang SPI\n");
return -ENODEV;
}
/* Configure and enable the XPT2046 interrupt pin as an input */
/* Initialize and register the SPI touschscreen device */
(void)sam_configgpio(GPIO_TSC_IRQ);
ret = ads7843e_register(dev, &g_tscinfo, CONFIG_ADS7843E_DEVMINOR);
if (ret < 0)
{
idbg("Failed to register touchscreen device\n");
/* up_spiuninitialize(dev); */
return -ENODEV;
/* Configure the PIO interrupt */
sam_gpioirq(SAM_TSC_IRQ);
/* Get an instance of the SPI interface for the touchscreen chip select */
dev = sam_tsc_spiinitialize();
if (!dev)
{
idbg("Failed to initialize bit bang SPI\n");
return -ENODEV;
}
/* Initialize and register the SPI touschscreen device */
ret = ads7843e_register(dev, &g_tscinfo, CONFIG_ADS7843E_DEVMINOR);
if (ret < 0)
{
idbg("Failed to register touchscreen device\n");
/* up_spiuninitialize(dev); */
return -ENODEV;
}
/* Now we are initialized */
initialized = true;
}
return OK;
@ -407,7 +422,13 @@ int arch_tcinitialize(int minor)
void arch_tcuninitialize(void)
{
/* No support for un-initializing the touchscreen XPT2046 device yet */
/* No real support for un-initializing the touchscreen XPT2046 device.
* Just make sure that interrupts are disabled and that no handler is
* attached.
*/
sam_gpioirqdisable(SAM_TSC_IRQ);
irq_detach(SAM_TSC_IRQ);
}
#endif /* CONFIG_ARDUINO_ITHEAD_TFT && CONFIG_SPI_BITBANG && CONFIG_INPUT_ADS7843E */