aboutsummaryrefslogtreecommitdiff
path: root/lib/stm32/common/pwr_common_all.c
diff options
context:
space:
mode:
Diffstat (limited to 'lib/stm32/common/pwr_common_all.c')
-rw-r--r--lib/stm32/common/pwr_common_all.c217
1 files changed, 217 insertions, 0 deletions
diff --git a/lib/stm32/common/pwr_common_all.c b/lib/stm32/common/pwr_common_all.c
new file mode 100644
index 0000000..451ed1c
--- /dev/null
+++ b/lib/stm32/common/pwr_common_all.c
@@ -0,0 +1,217 @@
+/** @defgroup STM32F1xx-pwr-file PWR
+
+@ingroup STM32F1xx
+
+@brief <b>libopencm3 STM32F1xx Power Control</b>
+
+@version 1.0.0
+
+@author @htmlonly &copy; @endhtmlonly 2012 Ken Sarkies <ksarkies@internode.on.net>
+
+@date 18 August 2012
+
+This library supports the power control system for the
+STM32F1 series of ARM Cortex Microcontrollers by ST Microelectronics.
+
+LGPL License Terms @ref lgpl_license
+*/
+/*
+ * This file is part of the libopencm3 project.
+ *
+ * Copyright (C) 2012 Ken Sarkies <ksarkies@internode.on.net>
+ *
+ * This library is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU Lesser General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public License
+ * along with this library. If not, see <http://www.gnu.org/licenses/>.
+ */
+
+/**@{*/
+
+#include <libopencm3/stm32/pwr.h>
+
+/*---------------------------------------------------------------------------*/
+/** @brief Disable Backup Domain Write Protection.
+
+This allows backup domain registers to be changed. These registers are write
+protected after a reset.
+*/
+
+void pwr_disable_backup_domain_write_protect(void)
+{
+ PWR_CR |= PWR_CR_DBP;
+}
+
+/*---------------------------------------------------------------------------*/
+/** @brief Re-enable Backup Domain Write Protection.
+
+This protects backup domain registers from inadvertent change.
+*/
+
+void pwr_enable_backup_domain_write_protect(void)
+{
+ PWR_CR &= ~PWR_CR_DBP;
+}
+
+/*---------------------------------------------------------------------------*/
+/** @brief Enable Power Voltage Detector.
+
+This provides voltage level threshold detection. The result of detection is
+provided in the power voltage detector output flag (see @ref pwr_voltage_high)
+or by setting the EXTI16 interrupt (see datasheet for configuration details).
+
+@param[in] pvd_level u32. Taken from @ref pwr_pls.
+*/
+
+void pwr_enable_power_voltage_detect(u32 pvd_level)
+{
+ PWR_CR &= ~PWR_CR_PLS_MASK;
+ PWR_CR |= (PWR_CR_PVDE | pvd_level);
+}
+
+/*---------------------------------------------------------------------------*/
+/** @brief Disable Power Voltage Detector.
+
+*/
+
+void pwr_disable_power_voltage_detect(void)
+{
+ PWR_CR &= ~PWR_CR_PVDE;
+}
+
+/*---------------------------------------------------------------------------*/
+/** @brief Clear the Standby Flag.
+
+This is set when the processor returns from a standby mode.
+*/
+
+void pwr_clear_standby_flag(void)
+{
+ PWR_CR |= PWR_CR_CSBF;
+}
+
+/*---------------------------------------------------------------------------*/
+/** @brief Clear the Wakeup Flag.
+
+This is set when the processor receives a wakeup signal.
+*/
+
+void pwr_clear_wakeup_flag(void)
+{
+ PWR_CR |= PWR_CR_CWUF;
+}
+
+/*---------------------------------------------------------------------------*/
+/** @brief Set Standby Mode in Deep Sleep.
+
+*/
+
+void pwr_set_standby_mode(void)
+{
+ PWR_CR |= PWR_CR_PDDS;
+}
+
+/*---------------------------------------------------------------------------*/
+/** @brief Set Stop Mode in Deep Sleep.
+
+*/
+
+void pwr_set_stop_mode(void)
+{
+ PWR_CR &= ~PWR_CR_PDDS;
+}
+
+/*---------------------------------------------------------------------------*/
+/** @brief Voltage Regulator On in Stop Mode.
+
+*/
+
+void pwr_voltage_regulator_on_in_stop(void)
+{
+ PWR_CR &= ~PWR_CR_LPDS;
+}
+
+/*---------------------------------------------------------------------------*/
+/** @brief Voltage Regulator Low Power in Stop Mode.
+
+*/
+
+void pwr_voltage_regulator_low_power_in_stop(void)
+{
+ PWR_CR |= PWR_CR_LPDS;
+}
+
+/*---------------------------------------------------------------------------*/
+/** @brief Enable Wakeup Pin.
+
+The wakeup pin is used for waking the processor from standby mode.
+*/
+
+void pwr_enable_wakeup_pin(void)
+{
+ PWR_CSR |= PWR_CSR_EWUP;
+}
+
+/*---------------------------------------------------------------------------*/
+/** @brief Release Wakeup Pin.
+
+The wakeup pin is used for general purpose I/O.
+*/
+
+void pwr_disable_wakeup_pin(void)
+{
+ PWR_CSR &= ~PWR_CSR_EWUP;
+}
+
+/*---------------------------------------------------------------------------*/
+/** @brief Get Voltage Detector Output.
+
+The voltage detector threshold must be set when the power voltage detector is
+enabled, see @ref pwr_enable_power_voltage_detect.
+
+@returns boolean: TRUE if the power voltage is above the preset voltage
+threshold.
+*/
+
+bool pwr_voltage_high(void)
+{
+ return (PWR_CSR & PWR_CSR_PVDO);
+}
+
+/*---------------------------------------------------------------------------*/
+/** @brief Get Standby Flag.
+
+The standby flag is set when the processor returns from a standby state. It is
+cleared by software (see @ref pwr_clear_standby_flag).
+
+@returns boolean: TRUE if the processor was in standby state.
+*/
+
+bool pwr_get_standby_flag(void)
+{
+ return (PWR_CSR & PWR_CSR_SBF);
+}
+
+/*---------------------------------------------------------------------------*/
+/** @brief Get Wakeup Flag.
+
+The wakeup flag is set when a wakeup event has been received. It is
+cleared by software (see @ref pwr_clear_wakeup_flag).
+
+@returns boolean: TRUE if a wakeup event was received.
+*/
+
+bool pwr_get_wakeup_flag(void)
+{
+ return (PWR_CSR & PWR_CSR_WUF);
+}
+/**@}*/
+