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Merge pull request #417 from Sissors/master 

[LPC1114] Sleep fix + some device.h settings
pull/421/head
Bogdan Marinescu 2014-07-29 18:48:52 +01:00
parent 7d32effdfd a545702123
commit 490d1a6606
3 changed files with 11 additions and 41 deletions
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4
libraries/mbed/targets/hal/TARGET_NXP/TARGET_LPC11XX_11CXX/TARGET_LPC11CXX/device.h
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@ -41,8 +41,8 @@
#define DEVICE_PWMOUT 1
#define DEVICE_SEMIHOST 1
#define DEVICE_LOCALFILESYSTEM 1
#define DEVICE_SEMIHOST 0
#define DEVICE_LOCALFILESYSTEM 0
#define DEVICE_ID_LENGTH 32
#define DEVICE_MAC_OFFSET 20

4
libraries/mbed/targets/hal/TARGET_NXP/TARGET_LPC11XX_11CXX/TARGET_LPC11XX/device.h
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@ -41,8 +41,8 @@
#define DEVICE_PWMOUT 1
#define DEVICE_SEMIHOST 1
#define DEVICE_LOCALFILESYSTEM 1
#define DEVICE_SEMIHOST 0
#define DEVICE_LOCALFILESYSTEM 0
#define DEVICE_ID_LENGTH 32
#define DEVICE_MAC_OFFSET 20

44
libraries/mbed/targets/hal/TARGET_NXP/TARGET_LPC11XX_11CXX/sleep.c
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@ -18,10 +18,6 @@
#include "mbed_interface.h"
void sleep(void) {
#if DEVICE_SEMIHOST
// ensure debug is disconnected
mbed_interface_disconnect();
#endif
// PCON[DPDEN] set to sleep
LPC_PMU->PCON = 0x0;
@ -33,46 +29,20 @@ void sleep(void) {
__WFI();
}
/*
* The mbed lpc1768 does not support the deepsleep mode
* as a debugger is connected to it (the mbed interface).
*
* As mentionned in an application note from NXP:
*
* http://www.po-star.com/public/uploads/20120319123122_141.pdf
*
* {{{
* The user should be aware of certain limitations during debugging.
* The most important is that, due to limitations of the Cortex-M3
* integration, the LPC17xx cannot wake up in the usual manner from
* Deep Sleep and Power-down modes. It is recommended not to use these
* modes during debug. Once an application is downloaded via JTAG/SWD
* interface, the USB to SWD/JTAG debug adapter (Keil ULINK2 for example)
* should be removed from the target board, and thereafter, power cycle
* the LPC17xx to allow wake-up from deep sleep and power-down modes
* }}}
*
* As the interface firmware does not reset the target when a
* mbed_interface_disconnect() semihosting call is made, the
* core cannot wake-up from deepsleep.
*
* We treat a deepsleep() as a normal sleep().
*/
void deepsleep(void) {
#if DEVICE_SEMIHOST
// ensure debug is disconnected
mbed_interface_disconnect();
#endif
// PCON[DPDEN] set to deepsleep
LPC_PMU->PCON = 0x2;
LPC_PMU->PCON = 0;
// SRC[SLEEPDEEP] set to 1 = deep sleep
SCB->SCR |= SCB_SCR_SLEEPDEEP_Msk;
// Power up everything after powerdown
LPC_SYSCON->PDAWAKECFG &= 0xFFFFF800;
//According to user manual it is kinda picky about reserved bits, so we follow that nicely
//Keep WDOSC and BOD in same state as they are now during deepsleep
LPC_SYSCON->PDSLEEPCFG = 0x000018B7 | (LPC_SYSCON->PDRUNCFG & (PDRUNCFG_WDTOSC_PD | PDRUNCFG_BOD_PD));
// Power up same as before powerdown
LPC_SYSCON->PDAWAKECFG = LPC_SYSCON->PDRUNCFG;
// wait for interrupt
__WFI();