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Olimex LPC_H3131: Add GPIO support for LEDs and for USB host power enable and overcurrent detection.

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This commit is contained in:
Gregory Nutt 2013-11-19 15:52:10 -06:00
parent 06330220ef
commit 4c2b07c388
6 changed files with 221 additions and 34 deletions
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5
configs/olimex-lpc-h3131/README.txt
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@ -3,6 +3,11 @@ README
This README file discusses the port of NuttX to the Olimex LPC-H3131 board.
NOTE: This is a minimal port to the Olimex LPC-H3131. According to Olimex
documentation, the LPC-H3131 is similar in design to the Embedded Artists
EA3131. As a consequence, it should be possible to leverage additional
functionality from configs/ea3131 without too much difficulty.
Contents
========

81
configs/olimex-lpc-h3131/include/board.h
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@ -100,17 +100,48 @@
(0)
/* LED definitions ******************************************************************/
/* If CONFIG_ARCH_LEDS is not defined, then the user can control the LEDs in any
* way. The following definitions are used to access individual LEDs.
*/
#define LED_STARTED 0
#define LED_HEAPALLOCATE 1
#define LED_IRQSENABLED 2
#define LED_STACKCREATED 3
#define LED_INIRQ 4
#define LED_SIGNAL 5
#define LED_ASSERTION 6
#define LED_PANIC 7
/* LED index values for use with lpc31_setled() */
#define BOARD_LED1 0
#define BOARD_LED2 1
#define BOARD_NLEDS 2
/* LED bits for use with lpc31_setleds() */
#define BOARD_LED1_BIT (1 << BOARD_LED1)
#define BOARD_LED2_BIT (1 << BOARD_LED2)
/* These LEDs are not used by the board port unless CONFIG_ARCH_LEDS is
* defined. In that case, the usage by the board port is as follows:
*
* SYMBOL Meaning LED state
* LED2 LED1
* ------------------------ -------------------------- ------ ------ */
#define LED_STARTED 0 /* NuttX has been started OFF OFF */
#define LED_HEAPALLOCATE 0 /* Heap has been allocated OFF OFF */
#define LED_IRQSENABLED 0 /* Interrupts enabled OFF OFF */
#define LED_STACKCREATED 1 /* Idle stack created ON OFF */
#define LED_INIRQ 2 /* In an interrupt N/C N/C */
#define LED_SIGNAL 2 /* In a signal handler N/C N/C */
#define LED_ASSERTION 2 /* An assertion failed N/C N/C */
#define LED_PANIC 3 /* The system has crashed N/C Blinking */
#undef LED_IDLE /* MCU is is sleep mode Not used */
/* Thus if LED2 is statically on, NuttX has successfully booted and is,
* apparently, running normmally. If LED1 is flashing at approximately
* 2Hz, then a fatal error has been detected and the system has halted.
*
* NOTE: That LED2 is not used after completion of booting and may
* be used by other board-specific logic.
*/
/* Button definitions ***************************************************************/
/* The Olimex LPC_H3131 has no user buttons */
/************************************************************************************
* Public Data
@ -141,26 +172,28 @@ extern "C" {
void lpc31_boardinitialize(void);
/************************************************************************************
* Button support.
*
* Description:
* up_buttoninit() must be called to initialize button resources. After that,
* up_buttons() may be called to collect the state of all buttons. up_buttons()
* returns an 8-bit bit set with each bit associated with a button. See the
* BUTTON_* definitions above for the meaning of each bit.
*
************************************************************************************/
#ifdef CONFIG_ARCH_BUTTONS
void up_buttoninit(void);
uint8_t up_buttons(void);
#endif
#undef EXTERN
#if defined(__cplusplus)
}
#endif
/************************************************************************************
* Name: lpc31_setled, and lpc31_setleds
*
* Description:
* These interfaces allow user control of the board LEDs.
*
* If CONFIG_ARCH_LEDS is defined, then NuttX will control both on-board LEDs up
* until the completion of boot. The it will continue to control LED1; LED2 is
* avaiable for application use.
*
* If CONFIG_ARCH_LEDS is not defined, then both LEDs are available for application
* use.
*
************************************************************************************/
void lpc31_setled(int led, bool ledon);
void lpc31_setleds(uint8_t ledset);
#endif /* __ASSEMBLY__ */
#endif /* __CONFIGS_OLIMEX_LPC_H3131_INCLUDE_BOARD_H */

4
configs/olimex-lpc-h3131/src/lpc31_boot.c
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@ -114,9 +114,7 @@ void lpc31_boardinitialize(void)
}
#endif
/* Configure on-board LEDs if LED support has been selected. */
/* Configure on-board LEDs in all cases */
#ifdef CONFIG_ARCH_LEDS
up_ledinit();
#endif
}

132
configs/olimex-lpc-h3131/src/lpc31_leds.c
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@ -50,6 +50,8 @@
#include "up_internal.h"
#include "lpc31_internal.h"
#include "lpc_h3131.h"
/****************************************************************************
* Definitions
****************************************************************************/
@ -80,27 +82,153 @@
/****************************************************************************
* Name: up_ledinit
*
* Description:
* Configure LEDs. LEDs are left in the OFF state.
*
****************************************************************************/
#ifdef CONFIG_ARCH_LEDS
void up_ledinit(void)
{
/* Turn off both LEDs */
gpio_outputlow(LPC31_IOCONFIG_GPIO, GPIO_LED1);
gpio_outputlow(LPC31_IOCONFIG_GPIO, GPIO_LED2);
}
/****************************************************************************
* Name: up_ledon
*
* Description:
* Select the "logical" ON state:
*
* SYMBOL Value Meaning LED state
* LED2 LED1
* ---------------- ----- ----------------------- -------- --------
* LED_STARTED 0 NuttX has been started OFF OFF
* LED_HEAPALLOCATE 0 Heap has been allocated OFF OFF
* LED_IRQSENABLED 0 Interrupts enabled OFF OFF
* LED_STACKCREATED 1 Idle stack created ON OFF
* LED_INIRQ 2 In an interrupt N/C N/C
* LED_SIGNAL 2 In a signal handler N/C N/C
* LED_ASSERTION 2 An assertion failed N/C N/C
* LED_PANIC 3 The system has crashed N/C Blinking
* LED_IDLE - MCU is is sleep mode Not used
*
****************************************************************************/
#ifdef CONFIG_ARCH_LEDS
void up_ledon(int led)
{
switch (led)
{
case 0:
gpio_outputlow(LPC31_IOCONFIG_GPIO, GPIO_LED1);
gpio_outputlow(LPC31_IOCONFIG_GPIO, GPIO_LED2);
break;
case 1:
gpio_outputlow(LPC31_IOCONFIG_GPIO, GPIO_LED1);
gpio_outputhigh(LPC31_IOCONFIG_GPIO, GPIO_LED2);
break;
case 2:
break;
case 3:
gpio_outputhigh(LPC31_IOCONFIG_GPIO, GPIO_LED1);
break;
}
}
#endif
/****************************************************************************
* Name: up_ledoff
*
* Description:
* Select the "logical" OFF state:
*
* SYMBOL Value Meaning LED state
* LED2 LED1
* ---------------- ----- ----------------------- -------- --------
* LED_STARTED 0 NuttX has been started OFF OFF
* LED_HEAPALLOCATE 0 Heap has been allocated OFF OFF
* LED_IRQSENABLED 0 Interrupts enabled OFF OFF
* LED_STACKCREATED 1 Idle stack created ON OFF
* LED_INIRQ 2 In an interrupt N/C N/C
* LED_SIGNAL 2 In a signal handler N/C N/C
* LED_ASSERTION 2 An assertion failed N/C N/C
* LED_PANIC 3 The system has crashed N/C Blinking
* LED_IDLE - MCU is is sleep mode Not used
*
****************************************************************************/
#ifdef CONFIG_ARCH_LEDS
void up_ledoff(int led)
{
switch (led)
{
case 0:
case 1:
case 2:
break;
case 3:
gpio_outputlow(LPC31_IOCONFIG_GPIO, GPIO_LED1);
break;
}
}
#endif
/************************************************************************************
* Name: lpc31_setled, and lpc31_setleds
*
* Description:
* These interfaces allow user control of the board LEDs.
*
* If CONFIG_ARCH_LEDS is defined, then NuttX will control both on-board LEDs up
* until the completion of boot. The it will continue to control LED2; LED1 is
* avaiable for application use.
*
* If CONFIG_ARCH_LEDS is not defined, then both LEDs are available for application
* use.
*
************************************************************************************/
void lpc31_setled(int led, bool ledon)
{
uint32_t bit;
#ifndef CONFIG_ARCH_LEDS
if (led == BOARD_LED1)
{
bit = GPIO_LED1;
}
else
#endif
if (led == BOARD_LED2)
{
bit = GPIO_LED2;
}
else
{
return;
}
if (ledon)
{
gpio_outputhigh(LPC31_IOCONFIG_GPIO, bit);
}
else
{
gpio_outputlow(LPC31_IOCONFIG_GPIO, bit);
}
}
#endif /* CONFIG_ARCH_LEDS */
void lpc31_setleds(uint8_t ledset)
{
#ifndef CONFIG_ARCH_LEDS
lpc31_setled(BOARD_LED1, (ledset & BOARD_LED1_BIT) != 0);
#endif
lpc31_setled(BOARD_LED2, (ledset & BOARD_LED2_BIT) != 0);
}

17
configs/olimex-lpc-h3131/src/lpc31_usbhost.c
View File

@ -158,10 +158,15 @@ static int ehci_waiter(int argc, char *argv[])
void weak_function lpc31_usbhost_bootinitialize(void)
{
/* Configure pin to drive VBUS power */
#warning Missing logic
/* Configure output pin to drive VBUS power (initial state: power off) */
/* Configure pin to detect overrcurrent errors */
gpio_outputhigh(LPC31_IOCONFIG_GPIO, GPIO_NOTG_PWR_E);
/* Configure input pin to detect overrcurrent errors */
gpio_outputhigh(LPC31_IOCONFIG_GPIO, GPIO_NOTG_OVRCR);
/* Configure to receive interrupts on the overrcurrent input pin */
#warning Missing logic
}
@ -256,12 +261,14 @@ void lpc31_usbhost_vbusdrive(int rhport, bool enable)
if (enable)
{
/* Enable the Power Switch by driving the enable pin low */
#warning Missing logic
gpio_outputlow(LPC31_IOCONFIG_GPIO, GPIO_NOTG_PWR_E);
}
else
{
/* Disable the Power Switch by driving the enable pin high */
#warning Missing logic
gpio_outputhigh(LPC31_IOCONFIG_GPIO, GPIO_NOTG_PWR_E);
}
}
}

16
configs/olimex-lpc-h3131/src/lpc_h3131.h
View File

@ -61,6 +61,9 @@
* LED2 Green GPIO18 High output illuminates
*/
#define GPIO_LED1 IOCONFIG_GPIO_GPIO17
#define GPIO_LED2 IOCONFIG_GPIO_GPIO18
/* USB HOST
*
* SIGNAL GPIO
@ -69,6 +72,9 @@
* #OTG_OVRCR GPIO20
*/
#define GPIO_NOTG_PWR_E IOCONFIG_GPIO_GPIO19
#define GPIO_NOTG_OVRCR IOCONFIG_GPIO_GPIO20
/* SPI Chip Selects */
/* SPI NOR flash is the only device on SPI. SPI_CS_OUT0 is its chip select */
@ -151,6 +157,16 @@ void weak_function lpc31_usbhost_bootinitialize(void);
int lpc31_usbhost_initialize(void);
#endif
/****************************************************************************
* Name: up_ledinit
*
* Description:
* Configure LEDs. LEDs are left in the OFF state.
*
****************************************************************************/
void up_ledinit(void);
#endif /* __ASSEMBLY__ */
#endif /* __CONFIGS_OLIMEX_LPC_H3131_SRC_LPC_H3131_H */