From 75d57372115eb70ac22d16240c5c887df8ae1da8 Mon Sep 17 00:00:00 2001 From: Grigori Goronzy Date: Sat, 31 Mar 2018 15:34:59 +0200 Subject: Add STM32F103 port Add a fully functional STM32F1 port, currently mostly targeting STM32F103 microcontrollers. This requires an 8 MHz XTAL. The maximum possible step rate is around 282K steps per second. This uses stm32flash to burn the firmware. The bootloader needs to be started by setting BOOT0 to 1 and resetting the MCU. There is no automatic bootloader, unlike on Arduino. Signed-off-by: Grigori Goronzy --- lib/hal-stm32f1/source/stm32f1xx_ll_rcc.c | 507 ++++++++++++++++++++++++++++++ 1 file changed, 507 insertions(+) create mode 100644 lib/hal-stm32f1/source/stm32f1xx_ll_rcc.c (limited to 'lib/hal-stm32f1/source/stm32f1xx_ll_rcc.c') diff --git a/lib/hal-stm32f1/source/stm32f1xx_ll_rcc.c b/lib/hal-stm32f1/source/stm32f1xx_ll_rcc.c new file mode 100644 index 00000000..e73cfcd0 --- /dev/null +++ b/lib/hal-stm32f1/source/stm32f1xx_ll_rcc.c @@ -0,0 +1,507 @@ +/** + ****************************************************************************** + * @file stm32f1xx_ll_rcc.c + * @author MCD Application Team + * @version V1.1.1 + * @date 12-May-2017 + * @brief RCC LL module driver. + ****************************************************************************** + * @attention + * + *

© COPYRIGHT(c) 2016 STMicroelectronics

+ * + * Redistribution and use in source and binary forms, with or without modification, + * are permitted provided that the following conditions are met: + * 1. Redistributions of source code must retain the above copyright notice, + * this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright notice, + * this list of conditions and the following disclaimer in the documentation + * and/or other materials provided with the distribution. + * 3. Neither the name of STMicroelectronics nor the names of its contributors + * may be used to endorse or promote products derived from this software + * without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" + * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE + * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE + * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL + * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR + * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER + * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, + * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE + * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. + * + ****************************************************************************** + */ +#if defined(USE_FULL_LL_DRIVER) + +/* Includes ------------------------------------------------------------------*/ +#include "stm32f1xx_ll_rcc.h" +#ifdef USE_FULL_ASSERT + #include "stm32_assert.h" +#else + #define assert_param(expr) ((void)0U) +#endif /* USE_FULL_ASSERT */ +/** @addtogroup STM32F1xx_LL_Driver + * @{ + */ + +#if defined(RCC) + +/** @defgroup RCC_LL RCC + * @{ + */ + +/* Private types -------------------------------------------------------------*/ +/* Private variables ---------------------------------------------------------*/ +/* Private constants ---------------------------------------------------------*/ +/* Private macros ------------------------------------------------------------*/ +/** @addtogroup RCC_LL_Private_Macros + * @{ + */ +#if defined(RCC_PLLI2S_SUPPORT) +#define IS_LL_RCC_I2S_CLKSOURCE(__VALUE__) (((__VALUE__) == LL_RCC_I2S2_CLKSOURCE) \ + || ((__VALUE__) == LL_RCC_I2S3_CLKSOURCE)) +#endif /* RCC_PLLI2S_SUPPORT */ + +#if defined(USB) || defined(USB_OTG_FS) +#define IS_LL_RCC_USB_CLKSOURCE(__VALUE__) (((__VALUE__) == LL_RCC_USB_CLKSOURCE)) +#endif /* USB */ + +#define IS_LL_RCC_ADC_CLKSOURCE(__VALUE__) (((__VALUE__) == LL_RCC_ADC_CLKSOURCE)) +/** + * @} + */ + +/* Private function prototypes -----------------------------------------------*/ +/** @defgroup RCC_LL_Private_Functions RCC Private functions + * @{ + */ +uint32_t RCC_GetSystemClockFreq(void); +uint32_t RCC_GetHCLKClockFreq(uint32_t SYSCLK_Frequency); +uint32_t RCC_GetPCLK1ClockFreq(uint32_t HCLK_Frequency); +uint32_t RCC_GetPCLK2ClockFreq(uint32_t HCLK_Frequency); +uint32_t RCC_PLL_GetFreqDomain_SYS(void); +#if defined(RCC_PLLI2S_SUPPORT) +uint32_t RCC_PLLI2S_GetFreqDomain_I2S(void); +#endif /* RCC_PLLI2S_SUPPORT */ +#if defined(RCC_PLL2_SUPPORT) +uint32_t RCC_PLL2_GetFreqClockFreq(void); +#endif /* RCC_PLL2_SUPPORT */ +/** + * @} + */ + +/* Exported functions --------------------------------------------------------*/ +/** @addtogroup RCC_LL_Exported_Functions + * @{ + */ + +/** @addtogroup RCC_LL_EF_Init + * @{ + */ + +/** + * @brief Reset the RCC clock configuration to the default reset state. + * @note The default reset state of the clock configuration is given below: + * - HSI ON and used as system clock source + * - HSE PLL, PLL2, PLL3 OFF + * - AHB, APB1 and APB2 prescaler set to 1. + * - CSS, MCO OFF + * - All interrupts disabled + * @note This function doesn't modify the configuration of the + * - Peripheral clocks + * - LSI, LSE and RTC clocks + * @retval An ErrorStatus enumeration value: + * - SUCCESS: RCC registers are de-initialized + * - ERROR: not applicable + */ +ErrorStatus LL_RCC_DeInit(void) +{ + uint32_t vl_mask = 0U; + + /* Set HSION bit */ + LL_RCC_HSI_Enable(); + + /* Reset SW, HPRE, PPRE, MCOSEL, PLLXTPRE, PLLSRC and ADCPRE bits */ + vl_mask = 0xFFFFFFFFU; + CLEAR_BIT(vl_mask, (RCC_CFGR_SW | RCC_CFGR_HPRE | RCC_CFGR_PPRE1 | RCC_CFGR_PPRE2 | RCC_CFGR_MCOSEL |\ + RCC_CFGR_PLLXTPRE | RCC_CFGR_PLLSRC | RCC_CFGR_ADCPRE)); + +#if defined(USB) + /* Reset USBPRE bit */ + CLEAR_BIT(vl_mask, RCC_CFGR_USBPRE); +#elif defined(USB_OTG_FS) + /* Reset OTGFSPRE bit */ + CLEAR_BIT(vl_mask, RCC_CFGR_OTGFSPRE); +#endif /* USB */ + +#if defined(RCC_CFGR_PLLMULL2) + /* Set PLL multiplication factor to 2 */ + vl_mask |= RCC_CFGR_PLLMULL2; +#else + /* Set PLL multiplication factor to 4 */ + vl_mask |= RCC_CFGR_PLLMULL4; +#endif /* RCC_CFGR_PLLMULL2 */ + + LL_RCC_WriteReg(CFGR, vl_mask); + + /* Reset HSEON, HSEBYP, CSSON, PLLON bits */ + vl_mask = 0xFFFFFFFFU; + CLEAR_BIT(vl_mask, (RCC_CR_PLLON | RCC_CR_CSSON | RCC_CR_HSEON | RCC_CR_HSEBYP)); + +#if defined(RCC_CR_PLL2ON) + /* Reset PLL2ON bit */ + CLEAR_BIT(vl_mask, RCC_CR_PLL2ON); +#endif /* RCC_CR_PLL2ON */ + +#if defined(RCC_CR_PLL3ON) + /* Reset PLL3ON bit */ + CLEAR_BIT(vl_mask, RCC_CR_PLL3ON); +#endif /* RCC_CR_PLL3ON */ + + LL_RCC_WriteReg(CR, vl_mask); + + /* Set HSITRIM bits to the reset value */ + LL_RCC_HSI_SetCalibTrimming(0x10U); + +#if defined(RCC_CFGR2_PREDIV1) + /* Reset CFGR2 register */ + vl_mask = 0x00000000U; + +#if defined(RCC_PLL2_SUPPORT) + /* Set PLL2 multiplication factor to 8 */ + vl_mask |= RCC_CFGR2_PLL2MUL8; +#endif /* RCC_PLL2_SUPPORT */ + +#if defined(RCC_PLLI2S_SUPPORT) + /* Set PLL3 multiplication factor to 8 */ + vl_mask |= RCC_CFGR2_PLL3MUL8; +#endif /* RCC_PLLI2S_SUPPORT */ + + LL_RCC_WriteReg(CFGR2, vl_mask); +#endif /* RCC_CFGR2_PREDIV1 */ + + /* Disable all interrupts */ + LL_RCC_WriteReg(CIR, 0x00000000U); + + return SUCCESS; +} + +/** + * @} + */ + +/** @addtogroup RCC_LL_EF_Get_Freq + * @brief Return the frequencies of different on chip clocks; System, AHB, APB1 and APB2 buses clocks + * and different peripheral clocks available on the device. + * @note If SYSCLK source is HSI, function returns values based on HSI_VALUE(**) + * @note If SYSCLK source is HSE, function returns values based on HSE_VALUE(***) + * @note If SYSCLK source is PLL, function returns values based on + * HSI_VALUE(**) or HSE_VALUE(***) multiplied/divided by the PLL factors. + * @note (**) HSI_VALUE is a defined constant but the real value may vary + * depending on the variations in voltage and temperature. + * @note (***) HSE_VALUE is a defined constant, user has to ensure that + * HSE_VALUE is same as the real frequency of the crystal used. + * Otherwise, this function may have wrong result. + * @note The result of this function could be incorrect when using fractional + * value for HSE crystal. + * @note This function can be used by the user application to compute the + * baud-rate for the communication peripherals or configure other parameters. + * @{ + */ + +/** + * @brief Return the frequencies of different on chip clocks; System, AHB, APB1 and APB2 buses clocks + * @note Each time SYSCLK, HCLK, PCLK1 and/or PCLK2 clock changes, this function + * must be called to update structure fields. Otherwise, any + * configuration based on this function will be incorrect. + * @param RCC_Clocks pointer to a @ref LL_RCC_ClocksTypeDef structure which will hold the clocks frequencies + * @retval None + */ +void LL_RCC_GetSystemClocksFreq(LL_RCC_ClocksTypeDef *RCC_Clocks) +{ + /* Get SYSCLK frequency */ + RCC_Clocks->SYSCLK_Frequency = RCC_GetSystemClockFreq(); + + /* HCLK clock frequency */ + RCC_Clocks->HCLK_Frequency = RCC_GetHCLKClockFreq(RCC_Clocks->SYSCLK_Frequency); + + /* PCLK1 clock frequency */ + RCC_Clocks->PCLK1_Frequency = RCC_GetPCLK1ClockFreq(RCC_Clocks->HCLK_Frequency); + + /* PCLK2 clock frequency */ + RCC_Clocks->PCLK2_Frequency = RCC_GetPCLK2ClockFreq(RCC_Clocks->HCLK_Frequency); +} + +#if defined(RCC_CFGR2_I2S2SRC) +/** + * @brief Return I2Sx clock frequency + * @param I2SxSource This parameter can be one of the following values: + * @arg @ref LL_RCC_I2S2_CLKSOURCE + * @arg @ref LL_RCC_I2S3_CLKSOURCE + * @retval I2S clock frequency (in Hz) + */ +uint32_t LL_RCC_GetI2SClockFreq(uint32_t I2SxSource) +{ + uint32_t i2s_frequency = LL_RCC_PERIPH_FREQUENCY_NO; + + /* Check parameter */ + assert_param(IS_LL_RCC_I2S_CLKSOURCE(I2SxSource)); + + /* I2S1CLK clock frequency */ + switch (LL_RCC_GetI2SClockSource(I2SxSource)) + { + case LL_RCC_I2S2_CLKSOURCE_SYSCLK: /*!< System clock selected as I2S clock source */ + case LL_RCC_I2S3_CLKSOURCE_SYSCLK: + i2s_frequency = RCC_GetSystemClockFreq(); + break; + + case LL_RCC_I2S2_CLKSOURCE_PLLI2S_VCO: /*!< PLLI2S oscillator clock selected as I2S clock source */ + case LL_RCC_I2S3_CLKSOURCE_PLLI2S_VCO: + default: + i2s_frequency = RCC_PLLI2S_GetFreqDomain_I2S() * 2U; + break; + } + + return i2s_frequency; +} +#endif /* RCC_CFGR2_I2S2SRC */ + +#if defined(USB) || defined(USB_OTG_FS) +/** + * @brief Return USBx clock frequency + * @param USBxSource This parameter can be one of the following values: + * @arg @ref LL_RCC_USB_CLKSOURCE + * @retval USB clock frequency (in Hz) + * @arg @ref LL_RCC_PERIPH_FREQUENCY_NO indicates that oscillator (HSI), HSE or PLL is not ready + */ +uint32_t LL_RCC_GetUSBClockFreq(uint32_t USBxSource) +{ + uint32_t usb_frequency = LL_RCC_PERIPH_FREQUENCY_NO; + + /* Check parameter */ + assert_param(IS_LL_RCC_USB_CLKSOURCE(USBxSource)); + + /* USBCLK clock frequency */ + switch (LL_RCC_GetUSBClockSource(USBxSource)) + { +#if defined(RCC_CFGR_USBPRE) + case LL_RCC_USB_CLKSOURCE_PLL: /* PLL clock used as USB clock source */ + if (LL_RCC_PLL_IsReady()) + { + usb_frequency = RCC_PLL_GetFreqDomain_SYS(); + } + break; + + case LL_RCC_USB_CLKSOURCE_PLL_DIV_1_5: /* PLL clock divided by 1.5 used as USB clock source */ + default: + if (LL_RCC_PLL_IsReady()) + { + usb_frequency = (RCC_PLL_GetFreqDomain_SYS() * 3U) / 2U; + } + break; +#endif /* RCC_CFGR_USBPRE */ +#if defined(RCC_CFGR_OTGFSPRE) + /* USBCLK = PLLVCO/2 + = (2 x PLLCLK) / 2 + = PLLCLK */ + case LL_RCC_USB_CLKSOURCE_PLL_DIV_2: /* PLL clock used as USB clock source */ + if (LL_RCC_PLL_IsReady()) + { + usb_frequency = RCC_PLL_GetFreqDomain_SYS(); + } + break; + + /* USBCLK = PLLVCO/3 + = (2 x PLLCLK) / 3 */ + case LL_RCC_USB_CLKSOURCE_PLL_DIV_3: /* PLL clock divided by 3 used as USB clock source */ + default: + if (LL_RCC_PLL_IsReady()) + { + usb_frequency = (RCC_PLL_GetFreqDomain_SYS() * 2U) / 3U; + } + break; +#endif /* RCC_CFGR_OTGFSPRE */ + } + + return usb_frequency; +} +#endif /* USB */ + +/** + * @brief Return ADCx clock frequency + * @param ADCxSource This parameter can be one of the following values: + * @arg @ref LL_RCC_ADC_CLKSOURCE + * @retval ADC clock frequency (in Hz) + */ +uint32_t LL_RCC_GetADCClockFreq(uint32_t ADCxSource) +{ + uint32_t adc_prescaler = 0U; + uint32_t adc_frequency = 0U; + + /* Check parameter */ + assert_param(IS_LL_RCC_ADC_CLKSOURCE(ADCxSource)); + + /* Get ADC prescaler */ + adc_prescaler = LL_RCC_GetADCClockSource(ADCxSource); + + /* ADC frequency = PCLK2 frequency / ADC prescaler (2, 4, 6 or 8) */ + adc_frequency = RCC_GetPCLK2ClockFreq(RCC_GetHCLKClockFreq(RCC_GetSystemClockFreq())) + / (((adc_prescaler >> POSITION_VAL(ADCxSource)) + 1U) * 2U); + + return adc_frequency; +} + +/** + * @} + */ + +/** + * @} + */ + +/** @addtogroup RCC_LL_Private_Functions + * @{ + */ + +/** + * @brief Return SYSTEM clock frequency + * @retval SYSTEM clock frequency (in Hz) + */ +uint32_t RCC_GetSystemClockFreq(void) +{ + uint32_t frequency = 0U; + + /* Get SYSCLK source -------------------------------------------------------*/ + switch (LL_RCC_GetSysClkSource()) + { + case LL_RCC_SYS_CLKSOURCE_STATUS_HSI: /* HSI used as system clock source */ + frequency = HSI_VALUE; + break; + + case LL_RCC_SYS_CLKSOURCE_STATUS_HSE: /* HSE used as system clock source */ + frequency = HSE_VALUE; + break; + + case LL_RCC_SYS_CLKSOURCE_STATUS_PLL: /* PLL used as system clock source */ + frequency = RCC_PLL_GetFreqDomain_SYS(); + break; + + default: + frequency = HSI_VALUE; + break; + } + + return frequency; +} + +/** + * @brief Return HCLK clock frequency + * @param SYSCLK_Frequency SYSCLK clock frequency + * @retval HCLK clock frequency (in Hz) + */ +uint32_t RCC_GetHCLKClockFreq(uint32_t SYSCLK_Frequency) +{ + /* HCLK clock frequency */ + return __LL_RCC_CALC_HCLK_FREQ(SYSCLK_Frequency, LL_RCC_GetAHBPrescaler()); +} + +/** + * @brief Return PCLK1 clock frequency + * @param HCLK_Frequency HCLK clock frequency + * @retval PCLK1 clock frequency (in Hz) + */ +uint32_t RCC_GetPCLK1ClockFreq(uint32_t HCLK_Frequency) +{ + /* PCLK1 clock frequency */ + return __LL_RCC_CALC_PCLK1_FREQ(HCLK_Frequency, LL_RCC_GetAPB1Prescaler()); +} + +/** + * @brief Return PCLK2 clock frequency + * @param HCLK_Frequency HCLK clock frequency + * @retval PCLK2 clock frequency (in Hz) + */ +uint32_t RCC_GetPCLK2ClockFreq(uint32_t HCLK_Frequency) +{ + /* PCLK2 clock frequency */ + return __LL_RCC_CALC_PCLK2_FREQ(HCLK_Frequency, LL_RCC_GetAPB2Prescaler()); +} + +/** + * @brief Return PLL clock frequency used for system domain + * @retval PLL clock frequency (in Hz) + */ +uint32_t RCC_PLL_GetFreqDomain_SYS(void) +{ + uint32_t pllinputfreq = 0U, pllsource = 0U; + + /* PLL_VCO = (HSE_VALUE, HSI_VALUE or PLL2 / PLL Predivider) * PLL Multiplicator */ + + /* Get PLL source */ + pllsource = LL_RCC_PLL_GetMainSource(); + + switch (pllsource) + { + case LL_RCC_PLLSOURCE_HSI_DIV_2: /* HSI used as PLL clock source */ + pllinputfreq = HSI_VALUE / 2U; + break; + + case LL_RCC_PLLSOURCE_HSE: /* HSE used as PLL clock source */ + pllinputfreq = HSE_VALUE / (LL_RCC_PLL_GetPrediv() + 1U); + break; + +#if defined(RCC_PLL2_SUPPORT) + case LL_RCC_PLLSOURCE_PLL2: /* PLL2 used as PLL clock source */ + pllinputfreq = RCC_PLL2_GetFreqClockFreq() / (LL_RCC_PLL_GetPrediv() + 1U); + break; +#endif /* RCC_PLL2_SUPPORT */ + + default: + pllinputfreq = HSI_VALUE / 2U; + break; + } + return __LL_RCC_CALC_PLLCLK_FREQ(pllinputfreq, LL_RCC_PLL_GetMultiplicator()); +} + +#if defined(RCC_PLL2_SUPPORT) +/** + * @brief Return PLL clock frequency used for system domain + * @retval PLL clock frequency (in Hz) + */ +uint32_t RCC_PLL2_GetFreqClockFreq(void) +{ + return __LL_RCC_CALC_PLL2CLK_FREQ(HSE_VALUE, LL_RCC_PLL2_GetMultiplicator(), LL_RCC_HSE_GetPrediv2()); +} +#endif /* RCC_PLL2_SUPPORT */ + +#if defined(RCC_PLLI2S_SUPPORT) +/** + * @brief Return PLL clock frequency used for system domain + * @retval PLL clock frequency (in Hz) + */ +uint32_t RCC_PLLI2S_GetFreqDomain_I2S(void) +{ + return __LL_RCC_CALC_PLLI2SCLK_FREQ(HSE_VALUE, LL_RCC_PLLI2S_GetMultiplicator(), LL_RCC_HSE_GetPrediv2()); +} +#endif /* RCC_PLLI2S_SUPPORT */ + +/** + * @} + */ + +/** + * @} + */ + +#endif /* defined(RCC) */ + +/** + * @} + */ + +#endif /* USE_FULL_LL_DRIVER */ + +/************************ (C) COPYRIGHT STMicroelectronics *****END OF FILE****/ -- cgit v1.2.3-70-g09d2