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SAMA5: The PIO used for the red LED is also used as the camera module reset line: Added a configuration option to suppress use of the red LED if the PIO is used for another purpose. Reported by David Sidrane.

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This commit is contained in:
Gregory Nutt 2014-04-11 15:57:35 -06:00
parent 069ea487ae
commit cecf3775e2
7 changed files with 89 additions and 21 deletions
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9
configs/sama5d3-xplained/README.txt
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@ -667,7 +667,8 @@ Buttons and LEDs
PE24. The red LED is also pulled high but is driven by a transistor so
that it is illuminated when power is applied even if PE24 is not
configured as an output.
configured as an output. If PE24 is configured as an output, then the
LED is illuminated by a high output.
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 defined in
@ -688,7 +689,7 @@ Buttons and LEDs
LED_IDLE MCU is is sleep mode Not used
Thus if the blue LED is statically on, NuttX has successfully booted and
is, apparently, running normally. If the red is flashing at
is, apparently, running normally. If the red LED is flashing at
approximately 2Hz, then a fatal error has been detected and the system
has halted.
@ -919,7 +920,7 @@ AT25 Serial FLASH
6 SCK PD12 SPI0_SPCK
1 /CS PD13 if jumper JP6 is closed.
NOTE: The MN8 is not populated on my SAMAD3 Xplained board. So, as a
NOTE: The MN8 is not populated on my SAMAD3 Xplained board. So, as a
result, these instructions would only apply if you were to have an AT25
Serial DataFlash installed in MN8.
@ -1484,7 +1485,7 @@ SDRAM Support
SDRAM Data Configuration
------------------------
In these configurations, .data and .bss are retained in ISRAM by default.
.data and .bss can also be retained in SDRAM using these slightly
different configuration settings. In this configuration, ISRAM is

12
configs/sama5d3x-ek/Kconfig
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@ -37,6 +37,17 @@ config SAMA5D3xEK_MT47H64M16HR
endchoice # SAMA5D3x-EK DRAM Type
config SAMA5D3xEK_NOREDLED
bool "Red LED not available"
default n
---help---
By default, both the blue LED and the red LED are used by the
SAMA5D3x-EK board logic. However, the PIO associated with the red
LED (PE24) has other board functions. For example, PE24 is also the
ISI_RST reset signal to the camera interface. So when PE24 is not
available to control the red LED, this configuration variable should
be set so that the LED logic will only used the blue LED.
config SAMA5D3xEK_NOR_MAIN
bool "Build nor_main"
default n
@ -231,6 +242,7 @@ if VIDEO_OV2640
config SAMA5D3xEK_OV2640_DEMO
bool "SAMA5 OV2640 camera demo"
default n
select SAMA5D3xEK_NOREDLED
---help---
Enable the SAMA5 OV2640 camera demo

32
configs/sama5d3x-ek/README.txt
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@ -787,12 +787,16 @@ Buttons and LEDs
PE24. The red LED is also pulled high but is driven by a transistor so
that it is illuminated when power is applied even if PE24 is not
configured as an output. If PE24 is configured as an output, then the
LCD is illuminated by a high output.
LED is illuminated by a high output.
N.B. PE24 Drives the RED Led on the CM (SODIMM200), but unfortunately
it is also connected to ISI_RST on the MB (Main Board) and controlling
it will reset a Camera connected to the ISI
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 defined in
include/board.h and src/sam_leds.c. The LEDs are used to encode OS-related
events as follows:
events as follows when the red LED (PE24) is available:
SYMBOL Meaning LED state
Blue Red
@ -807,9 +811,25 @@ Buttons and LEDs
LED_PANIC The system has crashed OFF Blinking
LED_IDLE MCU is is sleep mode Not used
If CONFIG_SAMA5D3xEK_NOREDLED=y, then the red LED is not used by the
system and the controls are as follows:
SYMBOL Meaning LED state
Blue Red
------------------- ----------------------- -------- ----------
LED_STARTED NuttX has been started OFF Not used
LED_HEAPALLOCATE Heap has been allocated OFF " " " "
LED_IRQSENABLED Interrupts enabled OFF " " " "
LED_STACKCREATED Idle stack created ON " " " "
LED_INIRQ In an interrupt No change
LED_SIGNAL In a signal handler No change
LED_ASSERTION An assertion failed No change
LED_PANIC The system has crashed Blinking " " " "
LED_IDLE MCU is is sleep mode Not used
Thus if the blue LED is statically on, NuttX has successfully booted and
is, apparently, running normally. If the red is flashing at
approximately 2Hz, then a fatal error has been detected and the system
is, apparently, running normally. If the red (or blue) LED is flashing
at approximately 2Hz, then a fatal error has been detected and the system
has halted.
Serial Consoles
@ -832,7 +852,7 @@ Serial Consoles
PB28 RXD1 PIO_USART1_RXD
PB26 CTS1 PIO_USART1_CTS
NOTE: Debug TX (DTXD) and RX (DRXD) pins also are routed to the
NOTE: Debug TX (DTXD) and RX (DRXD) pins also are routed to the
ADM3312EARU via non populated 0 Ohm resistors. Thus allowing one
skilled with a soldering iron to choose which UART is level
translated by the ADM3312EARU
@ -1650,7 +1670,7 @@ SDRAM Support
SDRAM Data Configuration
------------------------
In these configurations, .data and .bss are retained in ISRAM by default.
.data and .bss can also be retained in SDRAM using these slightly
different configuration settings. In this configuration, ISRAM is

24
configs/sama5d3x-ek/include/board.h
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@ -132,18 +132,24 @@
/* LED index values for use with sam_setled() */
#define BOARD_BLUE 0
#define BOARD_RED 1
#define BOARD_NLEDS 2
#ifdef CONFIG_SAMA5D3xEK_NOREDLED
# define BOARD_NLEDS 1
#else
# define BOARD_RED 1
# define BOARD_NLEDS 2
#endif
/* LED bits for use with sam_setleds() */
#define BOARD_BLUE_BIT (1 << BOARD_BLUE)
#define BOARD_RED_BIT (1 << BOARD_RED)
#ifndef CONFIG_SAMA5D3xEK_NOREDLED
# define BOARD_RED_BIT (1 << BOARD_RED)
#endif
/* 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 defined in
* include/board.h and src/sam_leds.c. The LEDs are used to encode OS-related
* events as follows:
* events as follows when the red LED (PE24) is available:
*
* SYMBOL Val Meaning LED state
* Blue Red
@ -158,9 +164,13 @@
#define LED_PANIC 3 /* The system has crashed OFF Blinking */
#undef LED_IDLE /* MCU is is sleep mode Not used */
/* Thus if the blue LED is statically on, NuttX has successfully booted and
* is, apparently, running normmally. If the red is flashing at
* approximately 2Hz, then a fatal error has been detected and the system
/* If CONFIG_SAMA5D3xEK_NOREDLED=y, then the red LED is not used by the
* system. The only difference from the above is that it is the blue, not
* the red LED that blinks in the event of an PANIC.
*
* Thus if the blue LED is statically on, NuttX has successfully booted and
* is, apparently, running normally. If the red (or blue) LED is flashing
* at approximately 2Hz, then a fatal error has been detected and the system
* has halted.
*/

14
configs/sama5d3x-ek/src/sam_autoleds.c
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@ -1,7 +1,7 @@
/****************************************************************************
* configs/sama5d3x-ek/src/sam_autoleds.c
*
* Copyright (C) 2013 Gregory Nutt. All rights reserved.
* Copyright (C) 2013-2014 Gregory Nutt. All rights reserved.
* Author: Gregory Nutt <gnutt@nuttx.org>
*
* Redistribution and use in source and binary forms, with or without
@ -123,7 +123,9 @@ void board_led_initialize(void)
/* Configure LED PIOs for output */
sam_configpio(PIO_BLUE);
#ifndef CONFIG_SAMA5D3xEK_NOREDLED
sam_configpio(PIO_RED);
#endif
}
/****************************************************************************
@ -133,7 +135,9 @@ void board_led_initialize(void)
void board_led_on(int led)
{
bool blueoff = true; /* Low illuminates */
#ifndef CONFIG_SAMA5D3xEK_NOREDLED
bool redon = false; /* High illuminates */
#endif
switch (led)
{
@ -149,12 +153,18 @@ void board_led_on(int led)
return;
case 3: /* LED_PANIC */
#ifdef CONFIG_SAMA5D3xEK_NOREDLED
blueoff = false;
#else
redon = true;
#endif
break;
}
sam_piowrite(PIO_BLUE, blueoff);
#ifndef CONFIG_SAMA5D3xEK_NOREDLED
sam_piowrite(PIO_RED, redon);
#endif
}
/****************************************************************************
@ -166,7 +176,9 @@ void board_led_off(int led)
if (led != 2)
{
sam_piowrite(PIO_BLUE, true); /* Low illuminates */
#ifndef CONFIG_SAMA5D3xEK_NOREDLED
sam_piowrite(PIO_RED, false); /* High illuminates */
#endif
}
}

8
configs/sama5d3x-ek/src/sam_userleds.c
View File

@ -1,7 +1,7 @@
/****************************************************************************
* configs/sama5d3x-ek/src/sam_userleds.c
*
* Copyright (C) 2013 Gregory Nutt. All rights reserved.
* Copyright (C) 2013-2014 Gregory Nutt. All rights reserved.
* Author: Gregory Nutt <gnutt@nuttx.org>
*
* Redistribution and use in source and binary forms, with or without
@ -108,7 +108,9 @@ void sam_ledinit(void)
/* Configure LED PIOs for output */
sam_configpio(PIO_BLUE);
#ifndef CONFIG_SAMA5D3xEK_NOREDLED
sam_configpio(PIO_RED);
#endif
}
/****************************************************************************
@ -126,12 +128,14 @@ void sam_setled(int led, bool ledon)
ledcfg = PIO_BLUE;
ledon = !ledon;
}
#ifndef CONFIG_SAMA5D3xEK_NOREDLED
else if (led == BOARD_RED)
{
/* High illuminates */
ledcfg = PIO_RED;
}
#endif
else
{
return;
@ -153,10 +157,12 @@ void sam_setleds(uint8_t ledset)
ledon = ((ledset & BOARD_BLUE_BIT) == 0);
sam_piowrite(PIO_BLUE, ledon);
#ifndef CONFIG_SAMA5D3xEK_NOREDLED
/* High illuminates */
ledon = ((ledset & BOARD_RED_BIT) != 0);
sam_piowrite(PIO_RED, ledon);
#endif
}
#endif /* !CONFIG_ARCH_LEDS */

11
configs/sama5d3x-ek/src/sama5d3x-ek.h
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@ -1,7 +1,7 @@
/************************************************************************************
* configs/sama5d3x-ek/src/sama5d3x-ek.h
*
* Copyright (C) 2013 Gregory Nutt. All rights reserved.
* Copyright (C) 2013-2014 Gregory Nutt. All rights reserved.
* Author: Gregory Nutt <gnutt@nuttx.org>
*
* Redistribution and use in source and binary forms, with or without
@ -349,12 +349,19 @@
* that it is illuminated when power is applied even if PE24 is not
* configured as an output. If PE24 is configured as an output, then the
* LCD is illuminated by a high output.
*
* N.B. PE24 Drives the RED Led on the CM (SODIMM200), but unfortunately
* it is also connected to ISI_RST on the MB (Main Board) and controlling
* it will reset a Camera connected to the ISI
*/
#define PIO_BLUE (PIO_OUTPUT | PIO_CFG_PULLUP | PIO_OUTPUT_SET | \
PIO_PORT_PIOE | PIO_PIN25)
#define PIO_RED (PIO_OUTPUT | PIO_CFG_PULLUP | PIO_OUTPUT_CLEAR | \
#ifndef CONFIG_SAMA5D3xEK_NOREDLED
# define PIO_RED (PIO_OUTPUT | PIO_CFG_PULLUP | PIO_OUTPUT_CLEAR | \
PIO_PORT_PIOE | PIO_PIN24)
#endif
/* Buttons **************************************************************************/
/* There are five push button switches on the SAMA5D3X-EK base board: