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Add Low Power driver (Rework of PR 183) #255

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Merged
merged 6 commits into from
May 25, 2018
Merged

Add Low Power driver (Rework of PR 183) #255

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116da57
Update HardwareSerial and uart driver for low power mode
Dec 18, 2017
60d8918
Add SYS_WAKUP pins list
fpistm May 23, 2018
47f9d92
Update manually some SYS_WKUPx
fpistm May 2, 2018
8618610
Add low power driver
fpistm Apr 26, 2018
f1243f5
Enable PWR HAL for all variants
fpistm Apr 27, 2018
dd3a59c
[RTC] Allow access to Backup domain
fpistm May 24, 2018
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11 changes: 11 additions & 0 deletions cores/arduino/HardwareSerial.cpp
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Original file line number Diff line number Diff line change
Expand Up @@ -182,6 +182,16 @@ void HardwareSerial::init(void)
_serial.tx_tail = 0;
}

void HardwareSerial::configForLowPower(void)
{
#if defined(HAL_PWR_MODULE_ENABLED) && defined(UART_IT_WUF)
// Reconfigure properly Serial instance to use HSI as clock source
end();
uart_config_lowpower(&_serial);
begin(_serial.baudrate, _config);
#endif
}

// Actual interrupt handlers //////////////////////////////////////////////////////////////

void HardwareSerial::_rx_complete_irq(serial_t* obj)
Expand Down Expand Up @@ -226,6 +236,7 @@ void HardwareSerial::begin(unsigned long baud, byte config)
uint32_t databits = 0;

_serial.baudrate = (uint32_t)baud;
_config = config;

// Manage databits
switch(config & 0x07) {
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4 changes: 4 additions & 0 deletions cores/arduino/HardwareSerial.h
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Expand Up @@ -125,11 +125,15 @@ class HardwareSerial : public Stream
void setRx(PinName _rx);
void setTx(PinName _tx);

friend class STM32LowPower;

// Interrupt handlers
static void _rx_complete_irq(serial_t* obj);
static int _tx_complete_irq(serial_t* obj);
private:
uint8_t _config;
void init(void);
void configForLowPower(void);
};

extern HardwareSerial Serial1;
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1 change: 1 addition & 0 deletions cores/arduino/board.h
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Expand Up @@ -14,6 +14,7 @@ extern "C"{
#include "digital_io.h"
#include "hal_uart_emul.h"
#include "hw_config.h"
#include "low_power.h"
#include "rtc.h"
#include "spi_com.h"
#include "stm32_eeprom.h"
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10 changes: 8 additions & 2 deletions cores/arduino/stm32/PinNames.h
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Expand Up @@ -9,7 +9,10 @@ extern "C" {
#endif

typedef enum {
// Not connected
NC = (int)0xFFFFFFFF,

// Pin name definition
PA_0 = (PortA << 4) + 0x00,
PA_1 = (PortA << 4) + 0x01,
PA_2 = (PortA << 4) + 0x02,
Expand Down Expand Up @@ -205,8 +208,11 @@ typedef enum {
PK_14 = (PortK << 4) + 0x0E,
PK_15 = (PortK << 4) + 0x0F,
#endif
// Not connected
NC = (int)0xFFFFFFFF
// Specific pin name define in the variant
#if __has_include("PinNamesVar.h")
#include "PinNamesVar.h"
#endif
P_END = NC
} PinName;

#ifdef __cplusplus
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