/* * This file is part of the libopenstm32 project. * * Copyright (C) 2009 Uwe Hermann * Copyright (C) 2009 Federico Ruiz-Ugalde * * This program 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. * * This program 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 . */ #ifndef LIBOPENSTM32_RCC_H #define LIBOPENSTM32_RCC_H #include "libopenstm32.h" /* RCC registers */ /* Note: AHBRSTR/CFGR2 only exist in "connectivity line" STM32s. */ #define RCC_CR MMIO32(RCC_BASE + 0x00) #define RCC_CFGR MMIO32(RCC_BASE + 0x04) #define RCC_CIR MMIO32(RCC_BASE + 0x08) #define RCC_APB2RSTR MMIO32(RCC_BASE + 0x0c) #define RCC_APB1RSTR MMIO32(RCC_BASE + 0x10) #define RCC_AHBENR MMIO32(RCC_BASE + 0x14) #define RCC_APB2ENR MMIO32(RCC_BASE + 0x18) #define RCC_APB1ENR MMIO32(RCC_BASE + 0x1c) #define RCC_BDCR MMIO32(RCC_BASE + 0x20) #define RCC_CSR MMIO32(RCC_BASE + 0x24) #define RCC_AHBRSTR MMIO32(RCC_BASE + 0x28) /* See note */ #define RCC_CFGR2 MMIO32(RCC_BASE + 0x2c) /* See note */ /* RCC_APB2ENR values */ /* Note: IOPFEN/IOPGEN are reserved in "connectivity line" STM32s. */ #define RCC_AFIOEN (1 << 0) #define RCC_IOPAEN (1 << 2) #define RCC_IOPBEN (1 << 3) #define RCC_IOPCEN (1 << 4) #define RCC_IOPDEN (1 << 5) #define RCC_IOPEEN (1 << 6) #define RCC_IOPFEN (1 << 7) /* N/A in all devices */ #define RCC_IOPGEN (1 << 8) /* N/A in all devices */ #define RCC_ADC1EN (1 << 9) #define RCC_ADC2EN (1 << 10) #define RCC_TIM1EN (1 << 11) #define RCC_SPI1EN (1 << 12) #define RCC_USART1EN (1 << 14) /* --- RCC_CFGS values ----------------------------------------------------- */ /* TODO: SW */ /* TODO: SWS */ /* HPRE: AHB prescaler */ #define HPRE_SYSCLK 0x0 #define HPRE_SYSCLK_DIV2 0x8 #define HPRE_SYSCLK_DIV4 0x9 #define HPRE_SYSCLK_DIV8 0xa #define HPRE_SYSCLK_DIV16 0xb #define HPRE_SYSCLK_DIV64 0xc #define HPRE_SYSCLK_DIV128 0xd #define HPRE_SYSCLK_DIV256 0xe #define HPRE_SYSCLK_DIV512 0xf /* PPRE1: APB low-speed prescaler (APB1) */ #define PPRE1_HCLK 0x0 #define PPRE1_HCLK_DIV2 0x4 #define PPRE1_HCLK_DIV4 0x5 #define PPRE1_HCLK_DIV8 0x6 #define PPRE1_HCLK_DIV16 0x7 /* PPRE2: APB high-speed prescaler (APB2) */ #define PPRE2_HCLK 0x0 #define PPRE2_HCLK_DIV2 0x4 #define PPRE2_HCLK_DIV4 0x5 #define PPRE2_HCLK_DIV8 0x6 #define PPRE2_HCLK_DIV16 0x7 /* ADCPRE: ADC prescaler */ #define ADCPRE_PLCLK2_DIV2 0x0 #define ADCPRE_PLCLK2_DIV4 0x1 #define ADCPRE_PLCLK2_DIV6 0x2 #define ADCPRE_PLCLK2_DIV8 0x3 /* PLLSRC: PLL entry clock source */ #define PLLSRC_HSI_CLKDIV2 0x0 #define PLLSRC_HSE_CLK 0x1 /* PLLXTPRE: HSE divider for PLL entry */ #define PLLXTPRE_HSE_CLK 0x0 #define PLLXTPRE_HSE_CLK_DIV2 0x1 /* PLLMUL: PLL multiplication factor */ #define PLLMUL_PLLCLK_MUL2 0x0 #define PLLMUL_PLLCLK_MUL3 0x1 #define PLLMUL_PLLCLK_MUL4 0x2 #define PLLMUL_PLLCLK_MUL5 0x3 #define PLLMUL_PLLCLK_MUL6 0x4 #define PLLMUL_PLLCLK_MUL7 0x5 #define PLLMUL_PLLCLK_MUL8 0x6 #define PLLMUL_PLLCLK_MUL9 0x7 #define PLLMUL_PLLCLK_MUL10 0x8 #define PLLMUL_PLLCLK_MUL11 0x9 #define PLLMUL_PLLCLK_MUL12 0xa #define PLLMUL_PLLCLK_MUL13 0xb #define PLLMUL_PLLCLK_MUL14 0xc #define PLLMUL_PLLCLK_MUL15 0xd #define PLLMUL_PLLCLK_MUL16 0xe // #define PLLMUL_PLLCLK_MUL16 0xf /* Errata? 17? */ /* USBPRE: USB prescaler */ #define USBPRE_PLLCLK_DIV1_5 0x0 #define USBPRE_PLLCLK 0x1 /* MCO: Microcontroller clock output */ #define MCO_NOCLK 0x0 #define MCO_SYSCLK 0x4 #define MCO_HSICLK 0x5 #define MCO_HSECLK 0x6 #define MCO_PLLCLK_DIV2 0x7 #define MCO_PLL2CLK 0x8 #define MCO_PLL3CLK_DIV2 0x9 #define MCO_XT1 0xa #define MCO_PLL3 0xb #endif