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MCUXpresso: Change the Kinetis deep sleep implementation 

The code checks if any of the UART's is still transmitting.
If so then prevent from entering deepsleep

Signed-off-by: Mahesh Mahadevan <mahesh.mahadevan@nxp.com>
pull/11412/head
Mahesh Mahadevan 2019-09-04 09:37:53 -05:00
parent ea54f126a5
commit 6eca8d2e2e
1 changed files with 6 additions and 18 deletions
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24
targets/TARGET_Freescale/TARGET_MCUXpresso_MCUS/api/sleep.c
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@ -17,11 +17,8 @@
#include "cmsis.h"
#include "fsl_smc.h"
#include "fsl_clock_config.h"
#include "pinmap.h"
#include "fsl_port.h"
#include "PeripheralPins.h"
extern void serial_wait_tx_complete(uint32_t uart_index);
extern bool serial_check_tx_ongoing();
void hal_sleep(void)
{
@ -32,7 +29,6 @@ void hal_sleep(void)
void hal_deepsleep(void)
{
uint32_t pin_func;
#if (defined(FSL_FEATURE_SOC_MCG_COUNT) && FSL_FEATURE_SOC_MCG_COUNT)
#if (defined(FSL_FEATURE_MCG_HAS_PLL) && FSL_FEATURE_MCG_HAS_PLL)
smc_power_state_t original_power_state;
@ -41,25 +37,17 @@ void hal_deepsleep(void)
#endif // FSL_FEATURE_MCG_HAS_PLL
#endif // FSL_FEATURE_SOC_MCG_COUNT
/* Check if any of the UART's is transmitting data */
if (serial_check_tx_ongoing()) {
return;
}
SMC_SetPowerModeProtection(SMC, kSMC_AllowPowerModeAll);
/* Wait till debug UART is done transmitting */
serial_wait_tx_complete(STDIO_UART);
/*
* Set pin for current leakage.
* Debug console RX pin: Set to pinmux to disable.
* Debug console TX pin: Don't need to change.
*/
pin_function(STDIO_UART_RX, (int)kPORT_PinDisabledOrAnalog);
SMC_PreEnterStopModes();
SMC_SetPowerModeVlps(SMC);
SMC_PostExitStopModes();
pin_func = pinmap_find_function(STDIO_UART_RX, PinMap_UART_RX);
pin_function(STDIO_UART_RX, pin_func);
#if (defined(FSL_FEATURE_SOC_MCG_COUNT) && FSL_FEATURE_SOC_MCG_COUNT)
#if (defined(FSL_FEATURE_MCG_HAS_PLL) && FSL_FEATURE_MCG_HAS_PLL)
/*