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-rw-r--r--libmaple/rcc.h632
1 files changed, 504 insertions, 128 deletions
diff --git a/libmaple/rcc.h b/libmaple/rcc.h
index 4b1f35d..f0f026b 100644
--- a/libmaple/rcc.h
+++ b/libmaple/rcc.h
@@ -27,6 +27,8 @@
* @brief reset and clock control definitions and prototypes
*/
+#include "libmaple_types.h"
+
#ifndef _RCC_H_
#define _RCC_H_
@@ -34,154 +36,528 @@
extern "C"{
#endif
-/* registers */
-#define RCC_BASE 0x40021000
-#define RCC_CR (RCC_BASE + 0x0)
-#define RCC_CFGR (RCC_BASE + 0x4)
-#define RCC_CIR (RCC_BASE + 0x8)
-#define RCC_APB2RSTR (RCC_BASE + 0xC)
-#define RCC_APB1RSTR (RCC_BASE + 0x10)
-#define RCC_AHBENR (RCC_BASE + 0x14)
-#define RCC_APB2ENR (RCC_BASE + 0x18)
-#define RCC_APB1ENR (RCC_BASE + 0x1C)
-#define RCC_BDCR (RCC_BASE + 0x20)
-#define RCC_CSR (RCC_BASE + 0x24)
-#define RCC_AHBSTR (RCC_BASE + 0x28)
-#define RCC_CFGR2 (RCC_BASE + 0x2C)
-
-#define RCC_CFGR_USBPRE (0x1 << 22)
-#define RCC_CFGR_ADCPRE (0x3 << 14)
-#define RCC_CFGR_PPRE1 (0x7 << 8)
-#define RCC_CFGR_PPRE2 (0x7 << 11)
-#define RCC_CFGR_HPRE (0xF << 4)
-#define RCC_CFGR_PLLSRC (0x1 << 16)
-
-#define RCC_CFGR_SWS (0x3 << 2)
-#define RCC_CFGR_SWS_PLL (0x2 << 2)
-#define RCC_CFGR_SWS_HSE (0x1 << 2)
-
-#define RCC_CFGR_SW (0x3 << 0)
-#define RCC_CFGR_SW_PLL (0x2 << 0)
-#define RCC_CFGR_SW_HSE (0x1 << 0)
-
-/* CR status bits */
-#define RCC_CR_HSEON (0x1 << 16)
-#define RCC_CR_HSERDY (0x1 << 17)
-#define RCC_CR_PLLON (0x1 << 24)
-#define RCC_CR_PLLRDY (0x1 << 25)
-
-#define RCC_WRITE_CFGR(val) __write(RCC_CFGR, val)
-#define RCC_READ_CFGR() __read(RCC_CFGR)
-
-#define RCC_WRITE_CR(val) __write(RCC_CR, val)
-#define RCC_READ_CR() __read(RCC_CR)
-
-/* sysclk source */
-#define RCC_CLKSRC_HSI (0x0)
-#define RCC_CLKSRC_HSE (0x1)
-#define RCC_CLKSRC_PLL (0x2)
-
-/* pll entry clock source */
-#define RCC_PLLSRC_HSE (0x1 << 16)
-#define RCC_PLLSRC_HSI_DIV_2 (0x0 << 16)
-
-/* adc prescaler dividers */
-#define RCC_ADCPRE_PCLK_DIV_2 (0x0 << 14)
-#define RCC_ADCPRE_PCLK_DIV_4 (0x1 << 14)
-#define RCC_ADCPRE_PCLK_DIV_6 (0x2 << 14)
-#define RCC_ADCPRE_PCLK_DIV_8 (0x3 << 14)
-
-/* apb1 prescaler dividers */
-#define RCC_APB1_HCLK_DIV_1 (0x0 << 8)
-#define RCC_APB1_HCLK_DIV_2 (0x4 << 8)
-#define RCC_APB1_HCLK_DIV_4 (0x5 << 8)
-#define RCC_APB1_HCLK_DIV_8 (0x6 << 8)
-#define RCC_APB1_HCLK_DIV_16 (0x7 << 8)
-
-/* apb2 prescaler dividers */
-#define RCC_APB2_HCLK_DIV_1 (0x0 << 11)
-#define RCC_APB2_HCLK_DIV_2 (0x4 << 11)
-#define RCC_APB2_HCLK_DIV_4 (0x5 << 11)
-#define RCC_APB2_HCLK_DIV_8 (0x6 << 11)
-#define RCC_APB2_HCLK_DIV_16 (0x7 << 11)
-
-/* ahb prescaler dividers */
-#define RCC_AHB_SYSCLK_DIV_1 (0x0 << 4)
-#define RCC_AHB_SYSCLK_DIV_2 (0x8 << 4)
-#define RCC_AHB_SYSCLK_DIV_4 (0x9 << 4)
-#define RCC_AHB_SYSCLK_DIV_8 (0xA << 4)
-#define RCC_AHB_SYSCLK_DIV_16 (0xB << 4)
-#define RCC_AHB_SYSCLK_DIV_32 (0xC << 4)
-#define RCC_AHB_SYSCLK_DIV_64 (0xD << 4)
-#define RCC_AHB_SYSCLK_DIV_128 (0xD << 4)
-#define RCC_AHB_SYSCLK_DIV_256 (0xE << 4)
-#define RCC_AHB_SYSCLK_DIV_512 (0xF << 4)
-
-/* pll multipliers */
-#define RCC_PLLMUL_2 (0x0 << 18)
-#define RCC_PLLMUL_3 (0x1 << 18)
-#define RCC_PLLMUL_4 (0x2 << 18)
-#define RCC_PLLMUL_5 (0x3 << 18)
-#define RCC_PLLMUL_6 (0x4 << 18)
-#define RCC_PLLMUL_7 (0x5 << 18)
-#define RCC_PLLMUL_8 (0x6 << 18)
-#define RCC_PLLMUL_9 (0x7 << 18)
-#define RCC_PLLMUL_10 (0x8 << 18)
-#define RCC_PLLMUL_11 (0x9 << 18)
-#define RCC_PLLMUL_12 (0xA << 18)
-#define RCC_PLLMUL_13 (0xB << 18)
-#define RCC_PLLMUL_14 (0xC << 18)
-#define RCC_PLLMUL_15 (0xD << 18)
-#define RCC_PLLMUL_16 (0xE << 18)
-
-
-/* prescalers */
-enum {
- RCC_PRESCALER_AHB,
- RCC_PRESCALER_APB1,
- RCC_PRESCALER_APB2,
- RCC_PRESCALER_USB,
- RCC_PRESCALER_ADC
-};
+/** RCC register map type */
+typedef struct rcc_reg_map {
+ __io uint32 CR; /**< Clock control register */
+ __io uint32 CFGR; /**< Clock configuration register */
+ __io uint32 CIR; /**< Clock interrupt register */
+ __io uint32 APB2RSTR; /**< APB2 peripheral reset register */
+ __io uint32 APB1RSTR; /**< APB1 peripheral reset register */
+ __io uint32 AHBENR; /**< AHB peripheral clock enable register */
+ __io uint32 APB2ENR; /**< APB2 peripheral clock enable register */
+ __io uint32 APB1ENR; /**< APB1 peripheral clock enable register */
+ __io uint32 BDCR; /**< Backup domain control register */
+ __io uint32 CSR; /**< Control/status register */
+} rcc_reg_map;
+
+/** RCC register map base pointer */
+#define RCC_BASE ((rcc_reg_map*)0x40021000)
+
+/*
+ * Register bit definitions
+ */
+
+/* Clock control register */
+
+#define RCC_CR_PLLRDY_BIT 25
+#define RCC_CR_PLLON_BIT 24
+#define RCC_CR_CSSON_BIT 19
+#define RCC_CR_HSEBYP_BIT 18
+#define RCC_CR_HSERDY_BIT 17
+#define RCC_CR_HSEON_BIT 16
+#define RCC_CR_HSIRDY_BIT 1
+#define RCC_CR_HSION_BIT 0
+
+#define RCC_CR_PLLRDY BIT(RCC_CR_PLLRDY_BIT)
+#define RCC_CR_PLLON BIT(RCC_CR_PLLON_BIT)
+#define RCC_CR_CSSON BIT(RCC_CR_CSSON_BIT)
+#define RCC_CR_HSEBYP BIT(RCC_CR_HSEBYP_BIT)
+#define RCC_CR_HSERDY BIT(RCC_CR_HSERDY_BIT)
+#define RCC_CR_HSEON BIT(RCC_CR_HSEON_BIT)
+#define RCC_CR_HSICAL (0xFF << 8)
+#define RCC_CR_HSITRIM (0x1F << 3)
+#define RCC_CR_HSIRDY BIT(RCC_CR_HSIRDY_BIT)
+#define RCC_CR_HSION BIT(RCC_CR_HSION_BIT)
+
+/* Clock configuration register */
+
+#define RCC_CFGR_USBPRE_BIT 22
+#define RCC_CFGR_PLLXTPRE_BIT 17
+#define RCC_CFGR_PLLSRC_BIT 16
+
+#define RCC_CFGR_MCO (0x3 << 24)
+#define RCC_CFGR_USBPRE BIT(RCC_CFGR_USBPRE_BIT)
+#define RCC_CFGR_PLLMUL (0xF << 18)
+#define RCC_CFGR_PLLXTPRE BIT(RCC_CFGR_PLLXTPRE_BIT)
+#define RCC_CFGR_PLLSRC BIT(RCC_CFGR_PLLSRC_BIT)
+#define RCC_CFGR_ADCPRE (0x3 << 14)
+#define RCC_CFGR_PPRE2 (0x7 << 11)
+#define RCC_CFGR_PPRE1 (0x7 << 8)
+#define RCC_CFGR_HPRE (0xF << 4)
+#define RCC_CFGR_SWS (0x3 << 2)
+#define RCC_CFGR_SWS_PLL (0x2 << 2)
+#define RCC_CFGR_SWS_HSE (0x1 << 2)
+#define RCC_CFGR_SW 0x3
+#define RCC_CFGR_SW_PLL 0x2
+#define RCC_CFGR_SW_HSE 0x1
+
+/* Clock interrupt register */
+
+#define RCC_CIR_CSSC_BIT 23
+#define RCC_CIR_PLLRDYC_BIT 20
+#define RCC_CIR_HSERDYC_BIT 19
+#define RCC_CIR_HSIRDYC_BIT 18
+#define RCC_CIR_LSERDYC_BIT 17
+#define RCC_CIR_LSIRDYC_BIT 16
+#define RCC_CIR_PLLRDYIE_BIT 12
+#define RCC_CIR_HSERDYIE_BIT 11
+#define RCC_CIR_HSIRDYIE_BIT 10
+#define RCC_CIR_LSERDYIE_BIT 9
+#define RCC_CIR_LSIRDYIE_BIT 8
+#define RCC_CIR_CSSF_BIT 7
+#define RCC_CIR_PLLRDYF_BIT 4
+#define RCC_CIR_HSERDYF_BIT 3
+#define RCC_CIR_HSIRDYF_BIT 2
+#define RCC_CIR_LSERDYF_BIT 1
+#define RCC_CIR_LSIRDYF_BIT 0
+
+#define RCC_CIR_CSSC BIT(RCC_CIR_CSSC_BIT)
+#define RCC_CIR_PLLRDYC BIT(RCC_CIR_PLLRDYC_BIT)
+#define RCC_CIR_HSERDYC BIT(RCC_CIR_HSERDYC_BIT)
+#define RCC_CIR_HSIRDYC BIT(RCC_CIR_HSIRDYC_BIT)
+#define RCC_CIR_LSERDYC BIT(RCC_CIR_LSERDYC_BIT)
+#define RCC_CIR_LSIRDYC BIT(RCC_CIR_LSIRDYC_BIT)
+#define RCC_CIR_PLLRDYIE BIT(RCC_CIR_PLLRDYIE_BIT)
+#define RCC_CIR_HSERDYIE BIT(RCC_CIR_HSERDYIE_BIT)
+#define RCC_CIR_HSIRDYIE BIT(RCC_CIR_HSIRDYIE_BIT)
+#define RCC_CIR_LSERDYIE BIT(RCC_CIR_LSERDYIE_BIT)
+#define RCC_CIR_LSIRDYIE BIT(RCC_CIR_LSIRDYIE_BIT)
+#define RCC_CIR_CSSF BIT(RCC_CIR_CSSF_BIT)
+#define RCC_CIR_PLLRDYF BIT(RCC_CIR_PLLRDYF_BIT)
+#define RCC_CIR_HSERDYF BIT(RCC_CIR_HSERDYF_BIT)
+#define RCC_CIR_HSIRDYF BIT(RCC_CIR_HSIRDYF_BIT)
+#define RCC_CIR_LSERDYF BIT(RCC_CIR_LSERDYF_BIT)
+#define RCC_CIR_LSIRDYF BIT(RCC_CIR_LSIRDYF_BIT)
+
+/* APB2 peripheral reset register */
+
+#define RCC_APB2RSTR_TIM11RST_BIT 21
+#define RCC_APB2RSTR_TIM10RST_BIT 20
+#define RCC_APB2RSTR_TIM9RST_BIT 19
+#define RCC_APB2RSTR_ADC3RST_BIT 15
+#define RCC_APB2RSTR_USART1RST_BIT 14
+#define RCC_APB2RSTR_TIM8RST_BIT 13
+#define RCC_APB2RSTR_SPI1RST_BIT 12
+#define RCC_APB2RSTR_TIM1RST_BIT 11
+#define RCC_APB2RSTR_ADC2RST_BIT 10
+#define RCC_APB2RSTR_ADC1RST_BIT 9
+#define RCC_APB2RSTR_IOPGRST_BIT 8
+#define RCC_APB2RSTR_IOPFRST_BIT 7
+#define RCC_APB2RSTR_IOPERST_BIT 6
+#define RCC_APB2RSTR_IOPDRST_BIT 5
+#define RCC_APB2RSTR_IOPCRST_BIT 4
+#define RCC_APB2RSTR_IOPBRST_BIT 3
+#define RCC_APB2RSTR_IOPARST_BIT 2
+#define RCC_APB2RSTR_AFIORST_BIT 0
+
+#define RCC_APB2RSTR_TIM11RST BIT(RCC_APB2RSTR_TIM11RST_BIT)
+#define RCC_APB2RSTR_TIM10RST BIT(RCC_APB2RSTR_TIM10RST_BIT)
+#define RCC_APB2RSTR_TIM9RST BIT(RCC_APB2RSTR_TIM9RST_BIT)
+#define RCC_APB2RSTR_ADC3RST BIT(RCC_APB2RSTR_ADC3RST_BIT)
+#define RCC_APB2RSTR_USART1RST BIT(RCC_APB2RSTR_USART1RST_BIT)
+#define RCC_APB2RSTR_TIM8RST BIT(RCC_APB2RSTR_TIM8RST_BIT)
+#define RCC_APB2RSTR_SPI1RST BIT(RCC_APB2RSTR_SPI1RST_BIT)
+#define RCC_APB2RSTR_TIM1RST BIT(RCC_APB2RSTR_TIM1RST_BIT)
+#define RCC_APB2RSTR_ADC2RST BIT(RCC_APB2RSTR_ADC2RST_BIT)
+#define RCC_APB2RSTR_ADC1RST BIT(RCC_APB2RSTR_ADC1RST_BIT)
+#define RCC_APB2RSTR_IOPGRST BIT(RCC_APB2RSTR_IOPGRST_BIT)
+#define RCC_APB2RSTR_IOPFRST BIT(RCC_APB2RSTR_IOPFRST_BIT)
+#define RCC_APB2RSTR_IOPERST BIT(RCC_APB2RSTR_IOPERST_BIT)
+#define RCC_APB2RSTR_IOPDRST BIT(RCC_APB2RSTR_IOPDRST_BIT)
+#define RCC_APB2RSTR_IOPCRST BIT(RCC_APB2RSTR_IOPCRST_BIT)
+#define RCC_APB2RSTR_IOPBRST BIT(RCC_APB2RSTR_IOPBRST_BIT)
+#define RCC_APB2RSTR_IOPARST BIT(RCC_APB2RSTR_IOPARST_BIT)
+#define RCC_APB2RSTR_AFIORST BIT(RCC_APB2RSTR_AFIORST_BIT)
+
+/* APB1 peripheral reset register */
+
+#define RCC_APB1RSTR_DACRST_BIT 29
+#define RCC_APB1RSTR_PWRRST_BIT 28
+#define RCC_APB1RSTR_BKPRST_BIT 27
+#define RCC_APB1RSTR_CANRST_BIT 25
+#define RCC_APB1RSTR_USBRST_BIT 23
+#define RCC_APB1RSTR_I2C2RST_BIT 22
+#define RCC_APB1RSTR_I2C1RST_BIT 21
+#define RCC_APB1RSTR_UART5RST_BIT 20
+#define RCC_APB1RSTR_UART4RST_BIT 19
+#define RCC_APB1RSTR_USART3RST_BIT 18
+#define RCC_APB1RSTR_USART2RST_BIT 17
+#define RCC_APB1RSTR_SPI3RST_BIT 15
+#define RCC_APB1RSTR_SPI2RST_BIT 14
+#define RCC_APB1RSTR_WWDRST_BIT 11
+#define RCC_APB1RSTR_TIM14RST_BIT 8
+#define RCC_APB1RSTR_TIM13RST_BIT 7
+#define RCC_APB1RSTR_TIM12RST_BIT 6
+#define RCC_APB1RSTR_TIM7RST_BIT 5
+#define RCC_APB1RSTR_TIM6RST_BIT 4
+#define RCC_APB1RSTR_TIM5RST_BIT 3
+#define RCC_APB1RSTR_TIM4RST_BIT 2
+#define RCC_APB1RSTR_TIM3RST_BIT 1
+#define RCC_APB1RSTR_TIM2RST_BIT 0
+
+#define RCC_APB1RSTR_DACRST BIT(RCC_APB1RSTR_DACRST_BIT)
+#define RCC_APB1RSTR_PWRRST BIT(RCC_APB1RSTR_PWRRST_BIT)
+#define RCC_APB1RSTR_BKPRST BIT(RCC_APB1RSTR_BKPRST_BIT)
+#define RCC_APB1RSTR_CANRST BIT(RCC_APB1RSTR_CANRST_BIT)
+#define RCC_APB1RSTR_USBRST BIT(RCC_APB1RSTR_USBRST_BIT)
+#define RCC_APB1RSTR_I2C2RST BIT(RCC_APB1RSTR_I2C2RST_BIT)
+#define RCC_APB1RSTR_I2C1RST BIT(RCC_APB1RSTR_I2C1RST_BIT)
+#define RCC_APB1RSTR_UART5RST BIT(RCC_APB1RSTR_UART5RST_BIT)
+#define RCC_APB1RSTR_UART4RST BIT(RCC_APB1RSTR_UART4RST_BIT)
+#define RCC_APB1RSTR_USART3RST BIT(RCC_APB1RSTR_USART3RST_BIT)
+#define RCC_APB1RSTR_USART2RST BIT(RCC_APB1RSTR_USART2RST_BIT)
+#define RCC_APB1RSTR_SPI3RST BIT(RCC_APB1RSTR_SPI3RST_BIT)
+#define RCC_APB1RSTR_SPI2RST BIT(RCC_APB1RSTR_SPI2RST_BIT)
+#define RCC_APB1RSTR_WWDRST BIT(RCC_APB1RSTR_WWDRST_BIT)
+#define RCC_APB1RSTR_TIM14RST BIT(RCC_APB1RSTR_TIM14RST_BIT)
+#define RCC_APB1RSTR_TIM13RST BIT(RCC_APB1RSTR_TIM13RST_BIT)
+#define RCC_APB1RSTR_TIM12RST BIT(RCC_APB1RSTR_TIM12RST_BIT)
+#define RCC_APB1RSTR_TIM7RST BIT(RCC_APB1RSTR_TIM7RST_BIT)
+#define RCC_APB1RSTR_TIM6RST BIT(RCC_APB1RSTR_TIM6RST_BIT)
+#define RCC_APB1RSTR_TIM5RST BIT(RCC_APB1RSTR_TIM5RST_BIT)
+#define RCC_APB1RSTR_TIM4RST BIT(RCC_APB1RSTR_TIM4RST_BIT)
+#define RCC_APB1RSTR_TIM3RST BIT(RCC_APB1RSTR_TIM3RST_BIT)
+#define RCC_APB1RSTR_TIM2RST BIT(RCC_APB1RSTR_TIM2RST_BIT)
+
+/* AHB peripheral clock enable register */
+
+#define RCC_AHBENR_SDIOEN_BIT 10
+#define RCC_AHBENR_FSMCEN_BIT 8
+#define RCC_AHBENR_CRCEN_BIT 7
+#define RCC_AHBENR_FLITFEN_BIT 4
+#define RCC_AHBENR_SRAMEN_BIT 2
+#define RCC_AHBENR_DMA2EN_BIT 1
+#define RCC_AHBENR_DMA1EN_BIT 0
+
+#define RCC_AHBENR_SDIOEN BIT(RCC_AHBENR_SDIOEN_BIT)
+#define RCC_AHBENR_FSMCEN BIT(RCC_AHBENR_FSMCEN_BIT)
+#define RCC_AHBENR_CRCEN BIT(RCC_AHBENR_CRCEN_BIT)
+#define RCC_AHBENR_FLITFEN BIT(RCC_AHBENR_FLITFEN_BIT)
+#define RCC_AHBENR_SRAMEN BIT(RCC_AHBENR_SRAMEN_BIT)
+#define RCC_AHBENR_DMA2EN BIT(RCC_AHBENR_DMA2EN_BIT)
+#define RCC_AHBENR_DMA1EN BIT(RCC_AHBENR_DMA1EN_BIT)
+
+/* APB2 peripheral clock enable register */
+
+#define RCC_APB2ENR_TIM11EN_BIT 21
+#define RCC_APB2ENR_TIM10EN_BIT 20
+#define RCC_APB2ENR_TIM9EN_BIT 19
+#define RCC_APB2ENR_ADC3EN_BIT 15
+#define RCC_APB2ENR_USART1EN_BIT 14
+#define RCC_APB2ENR_TIM8EN_BIT 13
+#define RCC_APB2ENR_SPI1EN_BIT 12
+#define RCC_APB2ENR_TIM1EN_BIT 11
+#define RCC_APB2ENR_ADC2EN_BIT 10
+#define RCC_APB2ENR_ADC1EN_BIT 9
+#define RCC_APB2ENR_IOPGEN_BIT 8
+#define RCC_APB2ENR_IOPFEN_BIT 7
+#define RCC_APB2ENR_IOPEEN_BIT 6
+#define RCC_APB2ENR_IOPDEN_BIT 5
+#define RCC_APB2ENR_IOPCEN_BIT 4
+#define RCC_APB2ENR_IOPBEN_BIT 3
+#define RCC_APB2ENR_IOPAEN_BIT 2
+#define RCC_APB2ENR_AFIOEN_BIT 0
+
+#define RCC_APB2ENR_TIM11EN BIT(RCC_APB2ENR_TIM11EN_BIT)
+#define RCC_APB2ENR_TIM10EN BIT(RCC_APB2ENR_TIM10EN_BIT)
+#define RCC_APB2ENR_TIM9EN BIT(RCC_APB2ENR_TIM9EN_BIT)
+#define RCC_APB2ENR_ADC3EN BIT(RCC_APB2ENR_ADC3EN_BIT)
+#define RCC_APB2ENR_USART1EN BIT(RCC_APB2ENR_USART1EN_BIT)
+#define RCC_APB2ENR_TIM8EN BIT(RCC_APB2ENR_TIM8EN_BIT)
+#define RCC_APB2ENR_SPI1EN BIT(RCC_APB2ENR_SPI1EN_BIT)
+#define RCC_APB2ENR_TIM1EN BIT(RCC_APB2ENR_TIM1EN_BIT)
+#define RCC_APB2ENR_ADC2EN BIT(RCC_APB2ENR_ADC2EN_BIT)
+#define RCC_APB2ENR_ADC1EN BIT(RCC_APB2ENR_ADC1EN_BIT)
+#define RCC_APB2ENR_IOPGEN BIT(RCC_APB2ENR_IOPGEN_BIT)
+#define RCC_APB2ENR_IOPFEN BIT(RCC_APB2ENR_IOPFEN_BIT)
+#define RCC_APB2ENR_IOPEEN BIT(RCC_APB2ENR_IOPEEN_BIT)
+#define RCC_APB2ENR_IOPDEN BIT(RCC_APB2ENR_IOPDEN_BIT)
+#define RCC_APB2ENR_IOPCEN BIT(RCC_APB2ENR_IOPCEN_BIT)
+#define RCC_APB2ENR_IOPBEN BIT(RCC_APB2ENR_IOPBEN_BIT)
+#define RCC_APB2ENR_IOPAEN BIT(RCC_APB2ENR_IOPAEN_BIT)
+#define RCC_APB2ENR_AFIOEN BIT(RCC_APB2ENR_AFIOEN_BIT)
+
+/* APB1 peripheral clock enable register */
+
+#define RCC_APB1ENR_DACEN_BIT 29
+#define RCC_APB1ENR_PWREN_BIT 28
+#define RCC_APB1ENR_BKPEN_BIT 27
+#define RCC_APB1ENR_CANEN_BIT 25
+#define RCC_APB1ENR_USBEN_BIT 23
+#define RCC_APB1ENR_I2C2EN_BIT 22
+#define RCC_APB1ENR_I2C1EN_BIT 21
+#define RCC_APB1ENR_UART5EN_BIT 20
+#define RCC_APB1ENR_UART4EN_BIT 19
+#define RCC_APB1ENR_USART3EN_BIT 18
+#define RCC_APB1ENR_USART2EN_BIT 17
+#define RCC_APB1ENR_SPI3EN_BIT 15
+#define RCC_APB1ENR_SPI2EN_BIT 14
+#define RCC_APB1ENR_WWDEN_BIT 11
+#define RCC_APB1ENR_TIM14EN_BIT 8
+#define RCC_APB1ENR_TIM13EN_BIT 7
+#define RCC_APB1ENR_TIM12EN_BIT 6
+#define RCC_APB1ENR_TIM7EN_BIT 5
+#define RCC_APB1ENR_TIM6EN_BIT 4
+#define RCC_APB1ENR_TIM5EN_BIT 3
+#define RCC_APB1ENR_TIM4EN_BIT 2
+#define RCC_APB1ENR_TIM3EN_BIT 1
+#define RCC_APB1ENR_TIM2EN_BIT 0
+
+#define RCC_APB1ENR_DACEN BIT(RCC_APB1ENR_DACEN_BIT)
+#define RCC_APB1ENR_PWREN BIT(RCC_APB1ENR_PWREN_BIT)
+#define RCC_APB1ENR_BKPEN BIT(RCC_APB1ENR_BKPEN_BIT)
+#define RCC_APB1ENR_CANEN BIT(RCC_APB1ENR_CANEN_BIT)
+#define RCC_APB1ENR_USBEN BIT(RCC_APB1ENR_USBEN_BIT)
+#define RCC_APB1ENR_I2C2EN BIT(RCC_APB1ENR_I2C2EN_BIT)
+#define RCC_APB1ENR_I2C1EN BIT(RCC_APB1ENR_I2C1EN_BIT)
+#define RCC_APB1ENR_UART5EN BIT(RCC_APB1ENR_UART5EN_BIT)
+#define RCC_APB1ENR_UART4EN BIT(RCC_APB1ENR_UART4EN_BIT)
+#define RCC_APB1ENR_USART3EN BIT(RCC_APB1ENR_USART3EN_BIT)
+#define RCC_APB1ENR_USART2EN BIT(RCC_APB1ENR_USART2EN_BIT)
+#define RCC_APB1ENR_SPI3EN BIT(RCC_APB1ENR_SPI3EN_BIT)
+#define RCC_APB1ENR_SPI2EN BIT(RCC_APB1ENR_SPI2EN_BIT)
+#define RCC_APB1ENR_WWDEN BIT(RCC_APB1ENR_WWDEN_BIT)
+#define RCC_APB1ENR_TIM14EN BIT(RCC_APB1ENR_TIM14EN_BIT)
+#define RCC_APB1ENR_TIM13EN BIT(RCC_APB1ENR_TIM13EN_BIT)
+#define RCC_APB1ENR_TIM12EN BIT(RCC_APB1ENR_TIM12EN_BIT)
+#define RCC_APB1ENR_TIM7EN BIT(RCC_APB1ENR_TIM7EN_BIT)
+#define RCC_APB1ENR_TIM6EN BIT(RCC_APB1ENR_TIM6EN_BIT)
+#define RCC_APB1ENR_TIM5EN BIT(RCC_APB1ENR_TIM5EN_BIT)
+#define RCC_APB1ENR_TIM4EN BIT(RCC_APB1ENR_TIM4EN_BIT)
+#define RCC_APB1ENR_TIM3EN BIT(RCC_APB1ENR_TIM3EN_BIT)
+#define RCC_APB1ENR_TIM2EN BIT(RCC_APB1ENR_TIM2EN_BIT)
+
+/* Backup domain control register */
+
+#define RCC_BDCR_BDRST_BIT 16
+#define RCC_BDCR_RTCEN_BIT 15
+#define RCC_BDCR_LSEBYP_BIT 2
+#define RCC_BDCR_LSERDY_BIT 1
+#define RCC_BDCR_LSEON_BIT 0
+
+#define RCC_BDCR_BDRST BIT(RCC_BDCR_BDRST_BIT)
+#define RCC_BDCR_RTCEN BIT(RCC_BDCR_RTC_BIT)
+#define RCC_BDCR_RTCSEL (0x3 << 8)
+#define RCC_BDCR_RTCSEL_NONE (0x0 << 8)
+#define RCC_BDCR_RTCSEL_LSE (0x1 << 8)
+#define RCC_BDCR_RTCSEL_HSE (0x3 << 8)
+#define RCC_BDCR_LSEBYP BIT(RCC_BDCR_LSEBYP_BIT)
+#define RCC_BDCR_LSERDY BIT(RCC_BDCR_LSERDY_BIT)
+#define RCC_BDCR_LSEON BIT(RCC_BDCR_LSEON_BIT)
+
+/* Control/status register */
+
+#define RCC_CSR_LPWRRSTF_BIT 31
+#define RCC_CSR_WWDGRSTF_BIT 30
+#define RCC_CSR_IWDGRSTF_BIT 29
+#define RCC_CSR_SFTRSTF_BIT 28
+#define RCC_CSR_PORRSTF_BIT 27
+#define RCC_CSR_PINRSTF_BIT 26
+#define RCC_CSR_RMVF_BIT 24
+#define RCC_CSR_LSIRDY_BIT 1
+#define RCC_CSR_LSION_BIT 0
+
+#define RCC_CSR_LPWRRSTF BIT(RCC_CSR_LPWRRSTF_BIT)
+#define RCC_CSR_WWDGRSTF BIT(RCC_CSR_WWDGRSTF_BIT)
+#define RCC_CSR_IWDGRSTF BIT(RCC_CSR_IWDGRSTF_BIT)
+#define RCC_CSR_SFTRSTF BIT(RCC_CSR_SFTRSTF_BIT)
+#define RCC_CSR_PORRSTF BIT(RCC_CSR_PORRSTF_BIT)
+#define RCC_CSR_PINRSTF BIT(RCC_CSR_PINRSTF_BIT)
+#define RCC_CSR_RMVF BIT(RCC_CSR_RMVF_BIT)
+#define RCC_CSR_LSIRDY BIT(RCC_CSR_LSIRDY_BIT)
+#define RCC_CSR_LSION BIT(RCC_CSR_LSION_BIT)
-// RCC Devices
-enum {
+/*
+ * Convenience routines
+ */
+
+/**
+ * SYSCLK sources
+ * @see rcc_clk_init()
+ */
+typedef enum rcc_sysclk_src {
+ RCC_CLKSRC_HSI = 0x0,
+ RCC_CLKSRC_HSE = 0x1,
+ RCC_CLKSRC_PLL = 0x2,
+} rcc_sysclk_src;
+
+/**
+ * PLL entry clock source
+ * @see rcc_clk_init()
+ */
+typedef enum rcc_pllsrc {
+ RCC_PLLSRC_HSE = (0x1 << 16),
+ RCC_PLLSRC_HSI_DIV_2 = (0x0 << 16)
+} rcc_pllsrc;
+
+/**
+ * PLL multipliers
+ * @see rcc_clk_init()
+ */
+typedef enum rcc_pll_multiplier {
+ RCC_PLLMUL_2 = (0x0 << 18),
+ RCC_PLLMUL_3 = (0x1 << 18),
+ RCC_PLLMUL_4 = (0x2 << 18),
+ RCC_PLLMUL_5 = (0x3 << 18),
+ RCC_PLLMUL_6 = (0x4 << 18),
+ RCC_PLLMUL_7 = (0x5 << 18),
+ RCC_PLLMUL_8 = (0x6 << 18),
+ RCC_PLLMUL_9 = (0x7 << 18),
+ RCC_PLLMUL_10 = (0x8 << 18),
+ RCC_PLLMUL_11 = (0x9 << 18),
+ RCC_PLLMUL_12 = (0xA << 18),
+ RCC_PLLMUL_13 = (0xB << 18),
+ RCC_PLLMUL_14 = (0xC << 18),
+ RCC_PLLMUL_15 = (0xD << 18),
+ RCC_PLLMUL_16 = (0xE << 18),
+} rcc_pll_multiplier;
+
+/**
+ * @brief Identifies bus and clock line for a device
+ *
+ * Also generally useful as a unique identifier for that device.
+ */
+typedef enum {
RCC_GPIOA,
RCC_GPIOB,
RCC_GPIOC,
RCC_GPIOD,
- RCC_GPIOE, // High-density devices only (Maple Native)
- RCC_GPIOF, // High-density devices only (Maple Native)
- RCC_GPIOG, // High-density devices only (Maple Native)
RCC_AFIO,
RCC_ADC1,
RCC_ADC2,
+ RCC_ADC3,
RCC_USART1,
RCC_USART2,
RCC_USART3,
- RCC_UART4, // High-density devices only (Maple Native)
- RCC_UART5, // High-density devices only (Maple Native)
RCC_TIMER1,
RCC_TIMER2,
RCC_TIMER3,
RCC_TIMER4,
- RCC_TIMER5, // High-density devices only (Maple Native)
- RCC_TIMER6, // High-density devices only (Maple Native)
- RCC_TIMER7, // High-density devices only (Maple Native)
- RCC_TIMER8, // High-density devices only (Maple Native)
RCC_SPI1,
RCC_SPI2,
- RCC_FSMC, // High-density devices only (Maple Native)
- RCC_DAC, // High-density devices only (Maple Native)
RCC_DMA1,
- RCC_DMA2, // High-density devices only (Maple Native)
-};
+ RCC_PWR,
+ RCC_BKP,
+ RCC_I2C1,
+ RCC_I2C2,
+ RCC_CRC,
+ RCC_FLITF,
+ RCC_SRAM,
+#if defined(STM32_HIGH_DENSITY) || defined(STM32_XL_DENSITY)
+ RCC_GPIOE,
+ RCC_GPIOF,
+ RCC_GPIOG,
+ RCC_UART4,
+ RCC_UART5,
+ RCC_TIMER5,
+ RCC_TIMER6,
+ RCC_TIMER7,
+ RCC_TIMER8,
+ RCC_FSMC,
+ RCC_DAC,
+ RCC_DMA2,
+ RCC_SDIO,
+ RCC_SPI3,
+#endif
+#ifdef STM32_XL_DENSITY
+ RCC_TIMER9,
+ RCC_TIMER10,
+ RCC_TIMER11,
+ RCC_TIMER12,
+ RCC_TIMER13,
+ RCC_TIMER14,
+#endif
+} rcc_clk_id;
+
+void rcc_clk_init(rcc_sysclk_src sysclk_src,
+ rcc_pllsrc pll_src,
+ rcc_pll_multiplier pll_mul);
+void rcc_clk_enable(rcc_clk_id device);
+void rcc_reset_dev(rcc_clk_id device);
+
+typedef enum rcc_clk_domain {
+ RCC_APB1,
+ RCC_APB2,
+ RCC_AHB
+} rcc_clk_domain;
+
+rcc_clk_domain rcc_dev_clk(rcc_clk_id device);
+/**
+ * Prescaler identifiers
+ * @see rcc_set_prescaler()
+ */
+typedef enum rcc_prescaler {
+ RCC_PRESCALER_AHB,
+ RCC_PRESCALER_APB1,
+ RCC_PRESCALER_APB2,
+ RCC_PRESCALER_USB,
+ RCC_PRESCALER_ADC
+} rcc_prescaler;
+
+/**
+ * ADC prescaler dividers
+ * @see rcc_set_prescaler()
+ */
+typedef enum adc_prescaler_divider {
+ RCC_ADCPRE_PCLK_DIV_2 = 0x0 << 14,
+ RCC_ADCPRE_PCLK_DIV_4 = 0x1 << 14,
+ RCC_ADCPRE_PCLK_DIV_6 = 0x2 << 14,
+ RCC_ADCPRE_PCLK_DIV_8 = 0x3 << 14,
+} adc_prescaler_divider;
+
+/**
+ * APB1 prescaler dividers
+ * @see rcc_set_prescaler()
+ */
+typedef enum apb1_prescaler_divider {
+ RCC_APB1_HCLK_DIV_1 = 0x0 << 8,
+ RCC_APB1_HCLK_DIV_2 = 0x4 << 8,
+ RCC_APB1_HCLK_DIV_4 = 0x5 << 8,
+ RCC_APB1_HCLK_DIV_8 = 0x6 << 8,
+ RCC_APB1_HCLK_DIV_16 = 0x7 << 8,
+} apb1_prescaler_divider;
+
+/**
+ * APB2 prescaler dividers
+ * @see rcc_set_prescaler()
+ */
+typedef enum apb2_prescaler_divider {
+ RCC_APB2_HCLK_DIV_1 = 0x0 << 11,
+ RCC_APB2_HCLK_DIV_2 = 0x4 << 11,
+ RCC_APB2_HCLK_DIV_4 = 0x5 << 11,
+ RCC_APB2_HCLK_DIV_8 = 0x6 << 11,
+ RCC_APB2_HCLK_DIV_16 = 0x7 << 11,
+} apb2_prescaler_divider;
+
+/**
+ * AHB prescaler dividers
+ * @see rcc_set_prescaler()
+ */
+typedef enum ahb_prescaler_divider {
+ RCC_AHB_SYSCLK_DIV_1 = 0x0 << 4,
+ RCC_AHB_SYSCLK_DIV_2 = 0x8 << 4,
+ RCC_AHB_SYSCLK_DIV_4 = 0x9 << 4,
+ RCC_AHB_SYSCLK_DIV_8 = 0xA << 4,
+ RCC_AHB_SYSCLK_DIV_16 = 0xB << 4,
+ RCC_AHB_SYSCLK_DIV_32 = 0xC << 4,
+ RCC_AHB_SYSCLK_DIV_64 = 0xD << 4,
+ RCC_AHB_SYSCLK_DIV_128 = 0xD << 4,
+ RCC_AHB_SYSCLK_DIV_256 = 0xE << 4,
+ RCC_AHB_SYSCLK_DIV_512 = 0xF << 4,
+} ahb_prescaler_divider;
-void rcc_clk_init(uint32 sysclk_src, uint32 pll_src, uint32 pll_mul);
-void rcc_clk_enable(uint32 dev);
-void rcc_reset_dev(uint32 dev);
-void rcc_set_prescaler(uint32 prescaler, uint32 divider);
+void rcc_set_prescaler(rcc_prescaler prescaler, uint32 divider);
#ifdef __cplusplus
} // extern "C"