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stm32f7: pwr: added basic support for pwr (VOS and overdrive)

pull/769/head
Matthew Lai 8 years ago
committed by Karl Palsson
parent
2c0e71b3c7
commit
17553da946
6 changed files with 366 additions and 10 deletions
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  1. 282
      include/libopencm3/stm32/f7/pwr.h
  2. 5
      include/libopencm3/stm32/f7/rcc.h
  3. 2
      include/libopencm3/stm32/pwr.h
  4. 2
      lib/stm32/f7/Makefile
  5. 66
      lib/stm32/f7/pwr.c
  6. 19
      lib/stm32/f7/rcc.c

282
include/libopencm3/stm32/f7/pwr.h
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@ -0,0 +1,282 @@
/** @defgroup pwr_defines PWR Defines
@brief <b>Defined Constants and Types for the STM32F7xx Power Control</b>
@ingroup STM32F7xx_defines
@version 1.0.0
@author @htmlonly &copy; @endhtmlonly 2017 Matthew Lai <m@matthewlai.ca>
@date 12 March 2017
LGPL License Terms @ref lgpl_license
*/
/*
* This file is part of the libopencm3 project.
*
* Copyright (C) 2017 Matthew Lai <m@matthewlai.ca>
*
* 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/>.
*/
#ifndef LIBOPENCM3_PWR_H
#define LIBOPENCM3_PWR_H
/**@{*/
/* --- PWR registers ------------------------------------------------------- */
/* Power control register (PWR_CR1) */
#define PWR_CR1 MMIO32(POWER_CONTROL_BASE + 0x00)
/* Power control/status register (PWR_CSR1) */
#define PWR_CSR1 MMIO32(POWER_CONTROL_BASE + 0x04)
/* Power control register 2 (PWR_CR2) */
#define PWR_CR2 MMIO32(POWER_CONTROL_BASE + 0x08)
/* Power control/status register 2 (PWR_CSR2) */
#define PWR_CSR2 MMIO32(POWER_CONTROL_BASE + 0x0c)
/* --- PWR_CR1 values ------------------------------------------------------- */
/* Bits [31:20]: Reserved, must be kept at reset value. */
/* UDEN[19:18]: Under-drive enable in stop mode */
#define PWR_CR1_UDEN_LSB 18
/** @defgroup pwr_uden Under-drive enable in stop mode
@ingroup STM32F_pwr_defines
@{*/
#define PWR_CR1_UDEN_DISABLED (0x0 << PWR_CR1_UDEN_LSB)
#define PWR_CR1_UDEN_ENABLED (0x3 << PWR_CR1_UDEN_LSB)
/**@}*/
#define PWR_CR1_UDEN_MASK (0x3 << PWR_CR1_UDEN_LSB)
/* ODSWEN: Over-drive switching enabled */
#define PWR_CR1_ODSWEN (1 << 17)
/* ODEN: Over-drive enable */
#define PWR_CR1_ODEN (1 << 16)
/* VOS[15:14]: Regulator voltage scaling output selection */
#define PWR_CR1_VOS_LSB 14
/** @defgroup pwr_vos Regulator voltage scaling output selection
@ingroup STM32F_pwr_defines
@{*/
#define PWR_CR1_VOS_SCALE_3 (0x1 << PWR_CR1_VOS_LSB)
#define PWR_CR1_VOS_SCALE_2 (0x2 << PWR_CR1_VOS_LSB)
#define PWR_CR1_VOS_SCALE_1 (0x3 << PWR_CR1_VOS_LSB)
/**@}*/
#define PWR_CR1_VOS_MASK (0x3 << PWR_CR1_VOS_LSB)
/* ADCDC1: Masks extra flash accesses by prefetch (see AN4073) */
#define PWR_CR1_ADCDC1 (1 << 13)
/* Bit 12: Reserved, must be kept at reset value. */
/* MRUDS: Main regulator in deepsleep under-drive mode */
#define PWR_CR1_MRUDS (1 << 11)
/* LPUDS: Low-power regulator in deepsleep under-drive mode */
#define PWR_CR1_LPUDS (1 << 10)
/* FPDS: Flash power-down in Stop mode */
#define PWR_CR1_FPDS (1 << 9)
/* DBP: Disable backup domain write protection */
#define PWR_CR1_DBP (1 << 8)
/* PLS[7:5]: PVD level selection */
#define PWR_CR1_PLS_LSB 5
/** @defgroup pwr_pls PVD level selection
@ingroup STM32F_pwr_defines
@{*/
#define PWR_CR1_PLS_2V0 (0x0 << PWR_CR_PLS_LSB)
#define PWR_CR1_PLS_2V1 (0x1 << PWR_CR_PLS_LSB)
#define PWR_CR1_PLS_2V3 (0x2 << PWR_CR_PLS_LSB)
#define PWR_CR1_PLS_2V5 (0x3 << PWR_CR_PLS_LSB)
#define PWR_CR1_PLS_2V6 (0x4 << PWR_CR_PLS_LSB)
#define PWR_CR1_PLS_2V7 (0x5 << PWR_CR_PLS_LSB)
#define PWR_CR1_PLS_2V8 (0x6 << PWR_CR_PLS_LSB)
#define PWR_CR1_PLS_2V9 (0x7 << PWR_CR_PLS_LSB)
/**@}*/
#define PWR_CR1_PLS_MASK (0x7 << PWR_CR_PLS_LSB)
/* PVDE: Power voltage detector enable */
#define PWR_CR1_PVDE (1 << 4)
/* CSBF: Clear standby flag */
#define PWR_CR1_CSBF (1 << 3)
/* Bit 2: Reserved, must be kept at reset value. */
/* PDDS: Power down deepsleep */
#define PWR_CR1_PDDS (1 << 1)
/* LPDS: Low-power deepsleep */
#define PWR_CR1_LPDS (1 << 0)
/* --- PWR_CSR1 values ------------------------------------------------------ */
/* Bits [31:20]: Reserved, must be kept at reset value. */
/* UDRDY[19:18]: Under-drive ready flag */
#define PWR_CSR1_UDRDY_LSB 18
/** @defgroup pwr_udrdy Under-drive ready flag
@ingroup STM32F_pwr_defines
@{*/
#define PWR_CSR1_UDRDY_DISABLED (0x0 << PWR_CSR1_UDRDY_LSB)
#define PWR_CSR1_UDRDY_ACTIVATED (0x3 << PWR_CSR1_UDRDY_LSB)
/**@}*/
#define PWR_CSR1_UDRDY_MASK (0x3 << PWR_CSR1_UDRDY_LSB)
/* ODSWRDY: Over-drive mode switching ready */
#define PWR_CSR1_ODSWRDY (1 << 17)
/* ODRDY: Over-drive mode ready */
#define PWR_CSR1_ODRDY (1 << 16)
/* Bit 15: Reserved, must be kept at reset value. */
/* VOSRDY: Regulator voltage scaling output selection ready bit */
#define PWR_CSR1_VOSRDY (1 << 14)
/* Bits [13:10]: Reserved, must be kept at reset value. */
/* BRE: Backup regulator enable */
#define PWR_CSR1_BRE (1 << 9)
/* EIWUP: Enable internal wakeup */
#define PWR_CSR1_EIWUP (1 << 8)
/* Bits [7:4]: Reserved, must be kept at reset value. */
/* BRR: Backup regulator ready */
#define PWR_CSR1_BRR (1 << 3)
/* PVDO: PVD output */
#define PWR_CSR1_PVDO (1 << 2)
/* SBF: Standby flag */
#define PWR_CSR1_SBF (1 << 1)
/* WUIF: Wakeup internal flag */
#define PWR_CSR1_WUIF (1 << 0)
/* --- PWR_CR2 values ------------------------------------------------------ */
/* Bits [31:14]: Reserved, must be kept at reset value. */
/* WUPP6: Wakeup pin polarity bit for PI11 */
#define PWR_CR2_WUPP6 (1 << 13)
/* WUPP5: Wakeup pin polarity bit for PI8 */
#define PWR_CR2_WUPP5 (1 << 12)
/* WUPP4: Wakeup pin polarity bit for PC13 */
#define PWR_CR2_WUPP4 (1 << 11)
/* WUPP3: Wakeup pin polarity bit for PC1 */
#define PWR_CR2_WUPP3 (1 << 10)
/* WUPP2: Wakeup pin polarity bit for PA2 */
#define PWR_CR2_WUPP2 (1 << 9)
/* WUPP1: Wakeup pin polarity bit for PA0 */
#define PWR_CR2_WUPP1 (1 << 8)
/* Bits [7:6]: Reserved, must be kept at reset value. */
/* CWUPF6: Clear Wakeup Pin flag for PI11 */
#define PWR_CR2_CWUPF6 (1 << 5)
/* CWUPF5: Clear Wakeup Pin flag for PI8 */
#define PWR_CR2_CWUPF5 (1 << 4)
/* CWUPF4: Clear Wakeup Pin flag for PC13 */
#define PWR_CR2_CWUPF4 (1 << 3)
/* CWUPF3: Clear Wakeup Pin flag for PC1 */
#define PWR_CR2_CWUPF3 (1 << 2)
/* CWUPF2: Clear Wakeup Pin flag for PA2 */
#define PWR_CR2_CWUPF2 (1 << 1)
/* CWUPF1: Clear Wakeup Pin flag for PA0 */
#define PWR_CR2_CWUPF1 (1 << 0)
/* --- PWR_CSR2 values ------------------------------------------------------ */
/* Bits [31:14]: Reserved, must be kept at reset value. */
/* EWUP6: Enable Wakeup pin for PI11 */
#define PWR_CSR2_EWUP6 (1 << 13)
/* EWUP5: Enable Wakeup pin for PI8 */
#define PWR_CSR2_EWUP5 (1 << 12)
/* EWUP4: Enable Wakeup pin for PC13 */
#define PWR_CSR2_EWUP4 (1 << 11)
/* EWUP3: Enable Wakeup pin for PC1 */
#define PWR_CSR2_EWUP3 (1 << 10)
/* EWUP2: Enable Wakeup pin for PA2 */
#define PWR_CSR2_EWUP2 (1 << 19)
/* EWUP1: Enable Wakeup pin for PA0 */
#define PWR_CSR2_EWUP1 (1 << 18)
/* Bits [7:6]: Reserved, must be kept at reset value. */
/* WUPF6: Wakeup Pin flag for PI11 */
#define PWR_CSR2_WUPF6 (1 << 5)
/* WUPF5: Wakeup Pin flag for PI8 */
#define PWR_CSR2_WUPF5 (1 << 4)
/* WUPF4: Wakeup Pin flag for PC13 */
#define PWR_CSR2_WUPF4 (1 << 3)
/* WUPF3: Wakeup Pin flag for PC1 */
#define PWR_CSR2_WUPF3 (1 << 2)
/* WUPF2: Wakeup Pin flag for PA2 */
#define PWR_CSR2_WUPF2 (1 << 1)
/* WUPF1: Wakeup Pin flag for PA0 */
#define PWR_CSR2_WUPF1 (1 << 0)
/* --- Function prototypes ------------------------------------------------- */
enum pwr_vos_scale {
PWR_SCALE1, /** <= 180MHz w/o overdrive, <= 216MHz w/ overdrive */
PWR_SCALE2, /** <= 168MHz w/o overdrive, <= 180MHz w/ overdrive */
PWR_SCALE3, /** <= 144MHz */
};
BEGIN_DECLS
void pwr_set_vos_scale(enum pwr_vos_scale scale);
void pwr_enable_overdrive(void);
void pwr_disable_overdrive(void);
END_DECLS
#endif

5
include/libopencm3/stm32/f7/rcc.h
View File

@ -36,6 +36,8 @@
#ifndef LIBOPENCM3_RCC_H
#define LIBOPENCM3_RCC_H
#include <libopencm3/stm32/f7/pwr.h>
/* --- RCC registers ------------------------------------------------------- */
#define RCC_CR MMIO32(RCC_BASE + 0x00)
@ -617,7 +619,8 @@ struct rcc_clock_scale {
uint8_t hpre;
uint8_t ppre1;
uint8_t ppre2;
uint8_t power_save;
enum pwr_vos_scale vos_scale;
uint8_t overdrive;
uint32_t apb1_frequency;
uint32_t apb2_frequency;
};

2
include/libopencm3/stm32/pwr.h
View File

@ -30,6 +30,8 @@
# include <libopencm3/stm32/f3/pwr.h>
#elif defined(STM32F4)
# include <libopencm3/stm32/f4/pwr.h>
#elif defined(STM32F7)
# include <libopencm3/stm32/f7/pwr.h>
#elif defined(STM32L1)
# include <libopencm3/stm32/l1/pwr.h>
#elif defined(STM32L0)

2
lib/stm32/f7/Makefile
View File

@ -42,7 +42,7 @@ TGT_CFLAGS += $(STANDARD_FLAGS)
ARFLAGS = rcs
OBJS = rcc.o gpio.o gpio_common_all.o gpio_common_f0234.o
OBJS = pwr.o rcc.o gpio.o gpio_common_all.o gpio_common_f0234.o
OBJS += rcc_common_all.o flash_common_f234.o flash_common_f24.o

66
lib/stm32/f7/pwr.c
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@ -0,0 +1,66 @@
/** @defgroup pwr_file PWR
*
* @ingroup STM32F7xx
*
* @brief <b>libopencm3 STM32F7xx Power Control</b>
*
* @version 1.0.0
*
* @author @htmlonly &copy; @endhtmlonly 2011 Stephen Caudle <scaudle@doceme.com>
* @author @htmlonly &copy; @endhtmlonly 2017 Matthew Lai <m@matthewlai.ca>
*
* @date 12 March 2017
*
* This library supports the power control system for the
* STM32F7 series of ARM Cortex Microcontrollers by ST Microelectronics.
*
* LGPL License Terms @ref lgpl_license
*/
/*
* This file is part of the libopencm3 project.
*
* Copyright (C) 2011 Stephen Caudle <scaudle@doceme.com>
* Copyright (C) 2017 Matthew Lai <m@matthewlai.ca>
*
* 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>
void pwr_set_vos_scale(enum pwr_vos_scale scale)
{
PWR_CR1 &= ~PWR_CR1_VOS_MASK;
if (scale == PWR_SCALE1) {
PWR_CR1 |= PWR_CR1_VOS_SCALE_1;
} else if (scale == PWR_SCALE2) {
PWR_CR1 |= PWR_CR1_VOS_SCALE_2;
} else if (scale == PWR_SCALE3) {
PWR_CR1 |= PWR_CR1_VOS_SCALE_3;
}
}
void pwr_enable_overdrive(void)
{
PWR_CR1 |= PWR_CR1_ODEN;
while (!(PWR_CSR1 & PWR_CSR1_ODRDY));
PWR_CR1 |= PWR_CR1_ODSWEN;
while (!(PWR_CSR1 & PWR_CSR1_ODSWRDY));
}
void pwr_disable_overdrive(void)
{
PWR_CR1 &= ~(PWR_CR1_ODEN | PWR_CR1_ODSWEN);
while (!(PWR_CSR1 & PWR_CSR1_ODSWRDY));
}

19
lib/stm32/f7/rcc.c
View File

@ -1,5 +1,6 @@
#include <libopencm3/cm3/assert.h>
#include <libopencm3/stm32/rcc.h>
#include <libopencm3/stm32/pwr.h>
#include <libopencm3/stm32/flash.h>
uint32_t rcc_ahb_frequency = 16000000;
@ -12,11 +13,13 @@ const struct rcc_clock_scale rcc_hse_25mhz_3v3[RCC_CLOCK_3V3_END] = {
.plln = 432,
.pllp = 2,
.pllq = 9,
.flash_config = FLASH_ACR_ICEN | FLASH_ACR_DCEN |
FLASH_ACR_LATENCY_7WS,
.hpre = RCC_CFGR_HPRE_DIV_NONE,
.ppre1 = RCC_CFGR_PPRE_DIV_4,
.ppre2 = RCC_CFGR_PPRE_DIV_2,
.flash_config = FLASH_ACR_ICEN | FLASH_ACR_DCEN |
FLASH_ACR_LATENCY_7WS,
.vos_scale = PWR_SCALE1,
.overdrive = 1,
.apb1_frequency = 108000000,
.apb2_frequency = 216000000,
},
@ -338,13 +341,13 @@ void rcc_clock_setup_hse_3v3(const struct rcc_clock_scale *clock)
rcc_osc_on(RCC_HSE);
rcc_wait_for_osc_ready(RCC_HSE);
/* Enable/disable high performance mode */
/* if (!clock->power_save) {
pwr_set_vos_scale(SCALE1);
} else {
pwr_set_vos_scale(SCALE2);
rcc_periph_clock_enable(RCC_PWR);
pwr_set_vos_scale(clock->vos_scale);
if (clock->overdrive) {
pwr_enable_overdrive();
}
*/
/*
* Set prescalers for AHB, ADC, ABP1, ABP2.
* Do this before touching the PLL (TODO: why?).

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