diff options
author | NIIBE Yutaka <gniibe@fsij.org> | 2016-05-26 17:40:47 +0900 |
---|---|---|
committer | NIIBE Yutaka <gniibe@fsij.org> | 2016-05-26 17:40:47 +0900 |
commit | 5f57222b737243b4521e5a887a825c6783ac5bcd (patch) | |
tree | 4a23128d2edae8a8195b18f08d0c21c781208d2a /mcu | |
parent | d81767b7c72d14b8c04babf6ec6d844d45f9b633 (diff) |
Move clk_gpio_init to mcu/
Diffstat (limited to 'mcu')
-rw-r--r-- | mcu/clk_gpio_init-kl.c | 140 | ||||
-rw-r--r-- | mcu/clk_gpio_init-stm32.c | 368 |
2 files changed, 508 insertions, 0 deletions
diff --git a/mcu/clk_gpio_init-kl.c b/mcu/clk_gpio_init-kl.c new file mode 100644 index 0000000..dedbac1 --- /dev/null +++ b/mcu/clk_gpio_init-kl.c @@ -0,0 +1,140 @@ +/* + * clk_gpio_init-kl.c - Clock and GPIO initialization for Kinetis L. + * + * Copyright (C) 2016 Flying Stone Technology + * Author: NIIBE Yutaka <gniibe@fsij.org> + * + * This file is a part of Chopstx, a thread library for embedded. + * + * Chopstx is free software: you can redistribute it and/or modify it + * under the terms of the GNU General Public License as published by + * the Free Software Foundation, either version 3 of the License, or + * (at your option) any later version. + * + * Chopstx 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 + * General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program. If not, see <http://www.gnu.org/licenses/>. + * + * As additional permission under GNU GPL version 3 section 7, you may + * distribute non-source form of the Program without the copy of the + * GNU GPL normally required by section 4, provided you inform the + * receipents of GNU GPL by a written offer. + * + */ + +#include <mcu/kl_sim.h> + +struct MCG { + volatile uint8_t C1; /* MCG Control Register 1 */ + volatile uint8_t C2; /* MCG Control Register 2 */ + uint8_t reserved0[4]; /* */ + volatile uint8_t S; /* MCG Status Register */ + uint8_t reserved1[1]; /* */ + volatile uint8_t SC; /* MCG Status and Control Register */ + uint8_t reserved2[15]; /* */ + volatile uint8_t MC; /* MCG Miscellaneous Control Register */ +}; +static struct MCG *const MCG = (struct MCG *const)0x40064000; + +struct USB_CLK_RECOVER { + volatile uint8_t CTRL; /* USB Clock */ + uint8_t rsvd38[3]; /* recovery control */ + volatile uint8_t IRC_EN; /* IRC48M oscillator */ + uint8_t rsvd39[3]; /* enable register */ + volatile uint8_t INT_EN; /* Clock recovery */ + uint8_t rsvd40[3]; /* interrupt enable */ + volatile uint8_t INT_STATUS; /* Clock recovery */ + /* interrupt status */ +}; +static struct USB_CLK_RECOVER *const USB_CLK_RECOVER = + (struct USB_CLK_RECOVER *const)0x40072140; + +static void __attribute__((used)) +clock_init (void) +{ + SIM->CLKDIV1 = (SIM->CLKDIV1 & 0xF0070000) + | (1 << 16) /* OUTDIV4 = 001: Divide-by-2 */ + ; + + MCG->MC = 0x80; /* HIRC Enable, LIRC_DIV2=000: Division factor=1 */ + MCG->C1 = 0x00; /* Select HIRC clock, LIRC disabled. */ + /* Make sure HIRC clock is selected. */ + while ((MCG->S & 0x0c) != 0) + ; + + SIM->SOPT2 = 0x00040060; /* USBSRC=IRC48, CLOKOUTSEL=LPO, RTC-clock */ + + SIM->SCGC4 = (1 << 18); /* Enable USB FS clock */ + SIM->SCGC5 = (1 << 10); /* Enable Port B clock */ + SIM->COPC = 0; /* COP disabled */ + + /* Crystal-less USB setup. */ + USB_CLK_RECOVER->IRC_EN = 0x02; + USB_CLK_RECOVER->CTRL = 0x80; +} + + +struct PORT { + volatile uint32_t PCR0; volatile uint32_t PCR1; + volatile uint32_t PCR2; volatile uint32_t PCR3; + volatile uint32_t PCR4; volatile uint32_t PCR5; + volatile uint32_t PCR6; volatile uint32_t PCR7; + volatile uint32_t PCR8; volatile uint32_t PCR9; + volatile uint32_t PCR10; volatile uint32_t PCR11; + volatile uint32_t PCR12; volatile uint32_t PCR13; + volatile uint32_t PCR14; volatile uint32_t PCR15; + volatile uint32_t PCR16; volatile uint32_t PCR17; + volatile uint32_t PCR18; volatile uint32_t PCR19; + volatile uint32_t PCR20; volatile uint32_t PCR21; + volatile uint32_t PCR22; volatile uint32_t PCR23; + volatile uint32_t PCR24; volatile uint32_t PCR25; + volatile uint32_t PCR26; volatile uint32_t PCR27; + volatile uint32_t PCR28; volatile uint32_t PCR29; + volatile uint32_t PCR30; volatile uint32_t PCR31; + volatile uint32_t GPCLR; volatile uint32_t GPCHR; + uint32_t reserved[6]; + volatile uint32_t ISFR; +}; +static struct PORT *const PORTB = (struct PORT *const)0x4004A000; +static struct PORT *const PORTD = (struct PORT *const)0x4004C000; +static struct PORT *const PORTE = (struct PORT *const)0x4004D000; + +struct GPIO { + volatile uint32_t PDOR; /* Port Data Output Register */ + volatile uint32_t PSOR; /* Port Set Output Register */ + volatile uint32_t PCOR; /* Port Clear Output Register */ + volatile uint32_t PTOR; /* Port Toggle Output Register */ + volatile uint32_t PDIR; /* Port Data Input Register */ + volatile uint32_t PDDR; /* Port Data Direction Register */ +}; +static struct GPIO *const GPIOB = (struct GPIO *const)0x400FF040; +static struct GPIO *const GPIOD = (struct GPIO *const)0x400FF0C0; +static struct GPIO *const GPIOE = (struct GPIO *const)0x400FF100; + + +static void __attribute__((used)) +gpio_init (void) +{ + PORTB->PCR0 = (1<<8) /* GPIO */ + | (0<<6) /* DriveStrengthEnable=0 */ + | (0<<4) /* PassiveFilterEnable=0 */ + | (1<<2) /* SlewRateEnable = slow */ + | (0<<1) /* pull enable = 0 */ + | (0<<0) /* puddselect= 0 */ + ; + PORTB->PCR1 = (1<<8) /* GPIO */ + | (0<<6) /* DriveStrengthEnable=0 */ + | (0<<4) /* PassiveFilterEnable=0 */ + | (1<<2) /* SlewRateEnable = slow */ + | (0<<1) /* pull enable = 0 */ + | (0<<0) /* puddselect= 0 */ + ; + + GPIOB->PDDR = (1 << 1) | (1 << 0); /* PTB0, PTB1 : Output */ + GPIOB->PSOR = (1 << 0); /* PTB0: Set : Light off */ + GPIOB->PCOR = (1 << 1); /* PTB1: Clear: Output 0 */ +} diff --git a/mcu/clk_gpio_init-stm32.c b/mcu/clk_gpio_init-stm32.c new file mode 100644 index 0000000..50660ea --- /dev/null +++ b/mcu/clk_gpio_init-stm32.c @@ -0,0 +1,368 @@ +/* + * clk_gpio_init-stm32.c - Clock and GPIO initialization for STM32. + * + * Copyright (C) 2015 Flying Stone Technology + * Author: NIIBE Yutaka <gniibe@fsij.org> + * + * This file is a part of Chopstx, a thread library for embedded. + * + * Chopstx is free software: you can redistribute it and/or modify it + * under the terms of the GNU General Public License as published by + * the Free Software Foundation, either version 3 of the License, or + * (at your option) any later version. + * + * Chopstx 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 + * General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program. If not, see <http://www.gnu.org/licenses/>. + * + * As additional permission under GNU GPL version 3 section 7, you may + * distribute non-source form of the Program without the copy of the + * GNU GPL normally required by section 4, provided you inform the + * receipents of GNU GPL by a written offer. + * + */ + +#define STM32_SW_HSI (0 << 0) +#define STM32_SW_PLL (2 << 0) +#define STM32_PLLSRC_HSI (0 << 16) +#define STM32_PLLSRC_HSE (1 << 16) + +#define STM32_PLLXTPRE_DIV1 (0 << 17) +#define STM32_PLLXTPRE_DIV2 (1 << 17) + +#define STM32_HPRE_DIV1 (0 << 4) + +#define STM32_PPRE1_DIV1 (0 << 8) +#define STM32_PPRE1_DIV2 (4 << 8) + +#define STM32_PPRE2_DIV1 (0 << 11) +#define STM32_PPRE2_DIV2 (4 << 11) + +#define STM32_ADCPRE_DIV4 (1 << 14) +#define STM32_ADCPRE_DIV6 (2 << 14) + +#define STM32_USBPRE_DIV1P5 (0 << 22) + +#define STM32_MCO_NOCLOCK (0 << 24) + +#if defined(MCU_STM32F0) +#define STM32_PPRE1 STM32_PPRE1_DIV1 +#define STM32_PLLSRC STM32_PLLSRC_HSI +#define STM32_FLASHBITS 0x00000011 +#define STM32_PLLCLKIN (STM32_HSICLK / 2) +#else +#define STM32_PPRE1 STM32_PPRE1_DIV2 +#define STM32_PLLSRC STM32_PLLSRC_HSE +#define STM32_FLASHBITS 0x00000012 +#define STM32_PLLCLKIN (STM32_HSECLK / 1) +#endif + +#define STM32_SW STM32_SW_PLL +#define STM32_HPRE STM32_HPRE_DIV1 +#define STM32_PPRE2 STM32_PPRE2_DIV1 +#define STM32_ADCPRE STM32_ADCPRE_DIV6 +#define STM32_MCOSEL STM32_MCO_NOCLOCK +#define STM32_USBPRE STM32_USBPRE_DIV1P5 + +#define STM32_PLLMUL ((STM32_PLLMUL_VALUE - 2) << 18) +#define STM32_PLLCLKOUT (STM32_PLLCLKIN * STM32_PLLMUL_VALUE) +#define STM32_SYSCLK STM32_PLLCLKOUT +#define STM32_HCLK (STM32_SYSCLK / 1) + + +#define PERIPH_BASE 0x40000000 +#define APBPERIPH_BASE PERIPH_BASE +#define APB2PERIPH_BASE (PERIPH_BASE + 0x10000) +#define AHBPERIPH_BASE (PERIPH_BASE + 0x20000) +#define AHB2PERIPH_BASE (PERIPH_BASE + 0x08000000) + +struct RCC { + volatile uint32_t CR; + volatile uint32_t CFGR; + volatile uint32_t CIR; + volatile uint32_t APB2RSTR; + volatile uint32_t APB1RSTR; + volatile uint32_t AHBENR; + volatile uint32_t APB2ENR; + volatile uint32_t APB1ENR; + volatile uint32_t BDCR; + volatile uint32_t CSR; +#if defined(MCU_STM32F0) + volatile uint32_t AHBRSTR; + volatile uint32_t CFGR2; + volatile uint32_t CFGR3; + volatile uint32_t CR2; +#endif +}; + +#define RCC_BASE (AHBPERIPH_BASE + 0x1000) +static struct RCC *const RCC = ((struct RCC *const)RCC_BASE); + +#define RCC_APB1ENR_USBEN 0x00800000 +#define RCC_APB1RSTR_USBRST 0x00800000 + +#define RCC_CR_HSION 0x00000001 +#define RCC_CR_HSIRDY 0x00000002 +#define RCC_CR_HSITRIM 0x000000F8 +#define RCC_CR_HSEON 0x00010000 +#define RCC_CR_HSERDY 0x00020000 +#define RCC_CR_PLLON 0x01000000 +#define RCC_CR_PLLRDY 0x02000000 + +#define RCC_CFGR_SWS 0x0000000C +#define RCC_CFGR_SWS_HSI 0x00000000 + +#define RCC_AHBENR_CRCEN 0x0040 + +#if defined(MCU_STM32F0) +#define RCC_AHBRSTR_IOPARST 0x00020000 +#define RCC_AHBRSTR_IOPBRST 0x00040000 +#define RCC_AHBRSTR_IOPCRST 0x00080000 +#define RCC_AHBRSTR_IOPDRST 0x00100000 +#define RCC_AHBRSTR_IOPFRST 0x00400000 + +#define RCC_AHBENR_IOPAEN 0x00020000 +#define RCC_AHBENR_IOPBEN 0x00040000 +#define RCC_AHBENR_IOPCEN 0x00080000 +#define RCC_AHBENR_IOPDEN 0x00100000 +#define RCC_AHBENR_IOPFEN 0x00400000 + +#define RCC_APB2RSTR_SYSCFGRST 0x00000001 +#define RCC_APB2ENR_SYSCFGEN 0x00000001 +#else +#define RCC_APB2RSTR_AFIORST 0x00000001 +#define RCC_APB2RSTR_IOPARST 0x00000004 +#define RCC_APB2RSTR_IOPBRST 0x00000008 +#define RCC_APB2RSTR_IOPCRST 0x00000010 +#define RCC_APB2RSTR_IOPDRST 0x00000020 +#define RCC_APB2RSTR_IOPERST 0x00000040 +#define RCC_APB2RSTR_IOPFRST 0x00000080 +#define RCC_APB2RSTR_IOPGRST 0x00000100 + +#define RCC_APB2ENR_AFIOEN 0x00000001 +#define RCC_APB2ENR_IOPAEN 0x00000004 +#define RCC_APB2ENR_IOPBEN 0x00000008 +#define RCC_APB2ENR_IOPCEN 0x00000010 +#define RCC_APB2ENR_IOPDEN 0x00000020 +#define RCC_APB2ENR_IOPEEN 0x00000040 +#define RCC_APB2ENR_IOPFEN 0x00000080 +#define RCC_APB2ENR_IOPGEN 0x00000100 +#endif + +#if defined(MCU_STM32F0) +struct SYSCFG { + volatile uint32_t CFGR1; + uint32_t dummy0; + volatile uint32_t EXTICR[4]; + volatile uint32_t CFGR2; +}; +#define SYSCFG_CFGR1_MEM_MODE 0x03 + +#define SYSCFG_BASE (APBPERIPH_BASE + 0x00010000) +static struct SYSCFG *const SYSCFG = ((struct SYSCFG *const) SYSCFG_BASE); +#endif + +struct FLASH { + volatile uint32_t ACR; + volatile uint32_t KEYR; + volatile uint32_t OPTKEYR; + volatile uint32_t SR; + volatile uint32_t CR; + volatile uint32_t AR; + volatile uint32_t RESERVED; + volatile uint32_t OBR; + volatile uint32_t WRPR; +}; + +#define FLASH_R_BASE (AHBPERIPH_BASE + 0x2000) +static struct FLASH *const FLASH = ((struct FLASH *const) FLASH_R_BASE); + +static void __attribute__((used)) +clock_init (void) +{ + /* HSI setup */ + RCC->CR |= RCC_CR_HSION; + while (!(RCC->CR & RCC_CR_HSIRDY)) + ; + /* Reset HSEON, HSEBYP, CSSON, and PLLON, not touching RCC_CR_HSITRIM */ + RCC->CR &= (RCC_CR_HSITRIM | RCC_CR_HSION); + RCC->CFGR = 0; + while ((RCC->CFGR & RCC_CFGR_SWS) != RCC_CFGR_SWS_HSI) + ; + +#if !defined(MCU_STM32F0) + /* HSE setup */ + RCC->CR |= RCC_CR_HSEON; + while (!(RCC->CR & RCC_CR_HSERDY)) + ; +#endif + + /* PLL setup */ + RCC->CFGR |= STM32_PLLMUL | STM32_PLLXTPRE | STM32_PLLSRC; + RCC->CR |= RCC_CR_PLLON; + while (!(RCC->CR & RCC_CR_PLLRDY)) + ; + + /* Clock settings */ + RCC->CFGR = STM32_MCOSEL | STM32_USBPRE | STM32_PLLMUL | STM32_PLLXTPRE + | STM32_PLLSRC | STM32_ADCPRE | STM32_PPRE2 | STM32_PPRE1 | STM32_HPRE; + + /* + * We don't touch RCC->CR2, RCC->CFGR2, RCC->CFGR3, and RCC->CIR. + */ + + /* Flash setup */ + FLASH->ACR = STM32_FLASHBITS; + + /* CRC */ + RCC->AHBENR |= RCC_AHBENR_CRCEN; + + /* Switching on the configured clock source. */ + RCC->CFGR |= STM32_SW; + while ((RCC->CFGR & RCC_CFGR_SWS) != (STM32_SW << 2)) + ; + +#if defined(MCU_STM32F0) + RCC->APB2ENR |= RCC_APB2ENR_SYSCFGEN; + RCC->APB2RSTR = RCC_APB2RSTR_SYSCFGRST; + RCC->APB2RSTR = 0; + +# if defined(HAVE_SYS_H) + /* Use vectors on RAM */ + SYSCFG->CFGR1 = (SYSCFG->CFGR1 & ~SYSCFG_CFGR1_MEM_MODE) | 3; +# endif +#endif +} + + +#if defined(MCU_STM32F0) +struct GPIO { + volatile uint32_t MODER; + volatile uint16_t OTYPER; + uint16_t dummy0; + volatile uint32_t OSPEEDR; + volatile uint32_t PUPDR; + volatile uint16_t IDR; + uint16_t dummy1; + volatile uint16_t ODR; + uint16_t dummy2; + volatile uint16_t BSRR; + uint16_t dummy3; + volatile uint32_t LCKR; + volatile uint32_t AFR[2]; + volatile uint16_t BRR; + uint16_t dummy4; +}; + +#define GPIOA_BASE (AHB2PERIPH_BASE + 0x0000) +#define GPIOA ((struct GPIO *) GPIOA_BASE) +#define GPIOB_BASE (AHB2PERIPH_BASE + 0x0400) +#define GPIOB ((struct GPIO *) GPIOB_BASE) +#define GPIOC_BASE (AHB2PERIPH_BASE + 0x0800) +#define GPIOC ((struct GPIO *) GPIOC_BASE) +#define GPIOD_BASE (AHB2PERIPH_BASE + 0x0C00) +#define GPIOD ((struct GPIO *) GPIOD_BASE) +#define GPIOF_BASE (AHB2PERIPH_BASE + 0x1400) +#define GPIOF ((struct GPIO *) GPIOF_BASE) +#else +struct AFIO +{ + volatile uint32_t EVCR; + volatile uint32_t MAPR; + volatile uint32_t EXTICR[4]; + uint32_t RESERVED0; + volatile uint32_t MAPR2; +}; + +#define AFIO_BASE 0x40010000 +static struct AFIO *const AFIO = (struct AFIO *const)AFIO_BASE; + +#define AFIO_MAPR_TIM3_REMAP_PARTIALREMAP 0x00000800 +#define AFIO_MAPR_SWJ_CFG_DISABLE 0x04000000 +#define AFIO_MAPR_SWJ_CFG_JTAGDISABLE 0x02000000 + + +struct GPIO { + volatile uint32_t CRL; + volatile uint32_t CRH; + volatile uint32_t IDR; + volatile uint32_t ODR; + volatile uint32_t BSRR; + volatile uint32_t BRR; + volatile uint32_t LCKR; +}; + +#define GPIOA_BASE (APB2PERIPH_BASE + 0x0800) +#define GPIOA ((struct GPIO *) GPIOA_BASE) +#define GPIOB_BASE (APB2PERIPH_BASE + 0x0C00) +#define GPIOB ((struct GPIO *) GPIOB_BASE) +#define GPIOC_BASE (APB2PERIPH_BASE + 0x1000) +#define GPIOC ((struct GPIO *) GPIOC_BASE) +#define GPIOD_BASE (APB2PERIPH_BASE + 0x1400) +#define GPIOD ((struct GPIO *) GPIOD_BASE) +#define GPIOE_BASE (APB2PERIPH_BASE + 0x1800) +#define GPIOE ((struct GPIO *) GPIOE_BASE) +#endif + +static struct GPIO *const GPIO_LED = ((struct GPIO *const) GPIO_LED_BASE); +#ifdef GPIO_USB_BASE +static struct GPIO *const GPIO_USB = ((struct GPIO *const) GPIO_USB_BASE); +#endif +#ifdef GPIO_OTHER_BASE +static struct GPIO *const GPIO_OTHER = ((struct GPIO *const) GPIO_OTHER_BASE); +#endif + +static void __attribute__((used)) +gpio_init (void) +{ + /* Enable GPIO clock. */ +#if defined(MCU_STM32F0) + RCC->AHBENR |= RCC_ENR_IOP_EN; + RCC->AHBRSTR = RCC_RSTR_IOP_RST; + RCC->AHBRSTR = 0; +#else + RCC->APB2ENR |= RCC_ENR_IOP_EN; + RCC->APB2RSTR = RCC_RSTR_IOP_RST; + RCC->APB2RSTR = 0; +#endif + +#if defined(MCU_STM32F0) + GPIO_LED->OSPEEDR = VAL_GPIO_LED_OSPEEDR; + GPIO_LED->OTYPER = VAL_GPIO_LED_OTYPER; + GPIO_LED->MODER = VAL_GPIO_LED_MODER; + GPIO_LED->PUPDR = VAL_GPIO_LED_PUPDR; + +#ifdef GPIO_OTHER_BASE + GPIO_OTHER->OSPEEDR = VAL_GPIO_OTHER_OSPEEDR; + GPIO_OTHER->OTYPER = VAL_GPIO_OTHER_OTYPER; + GPIO_OTHER->MODER = VAL_GPIO_OTHER_MODER; + GPIO_OTHER->PUPDR = VAL_GPIO_OTHER_PUPDR; +#endif +#else +#ifdef AFIO_MAPR_SOMETHING + AFIO->MAPR |= AFIO_MAPR_SOMETHING; +#endif + + /* LED is mandatory. If it's on an independent port, we configure it. */ + GPIO_LED->ODR = VAL_GPIO_LED_ODR; + GPIO_LED->CRH = VAL_GPIO_LED_CRH; + GPIO_LED->CRL = VAL_GPIO_LED_CRL; + + /* If there is USB enabler pin and it's independent, we configure it. */ +#if defined(GPIO_USB_BASE) && GPIO_USB_BASE != GPIO_LED_BASE + GPIO_USB->ODR = VAL_GPIO_USB_ODR; + GPIO_USB->CRH = VAL_GPIO_USB_CRH; + GPIO_USB->CRL = VAL_GPIO_USB_CRL; +#endif + +#ifdef GPIO_OTHER_BASE + GPIO_OTHER->ODR = VAL_GPIO_OTHER_ODR; + GPIO_OTHER->CRH = VAL_GPIO_OTHER_CRH; + GPIO_OTHER->CRL = VAL_GPIO_OTHER_CRL; +#endif +#endif +} |