diff options
Diffstat (limited to 'libmaple/stm32f1')
| -rw-r--r-- | libmaple/stm32f1/rcc.c | 41 |
1 files changed, 7 insertions, 34 deletions
diff --git a/libmaple/stm32f1/rcc.c b/libmaple/stm32f1/rcc.c index c40d52f..c8d24c6 100644 --- a/libmaple/stm32f1/rcc.c +++ b/libmaple/stm32f1/rcc.c @@ -34,10 +34,7 @@ #include <libmaple/libmaple.h> #include <libmaple/bitband.h> -struct rcc_dev_info { - const rcc_clk_domain clk_domain; - const uint8 line_num; -}; +#include "rcc_private.h" #define APB1 RCC_APB1 #define APB2 RCC_APB2 @@ -45,7 +42,7 @@ struct rcc_dev_info { /* Device descriptor table, maps rcc_clk_id onto bus and enable/reset * register bit numbers. */ -static const struct rcc_dev_info rcc_dev_table[] = { +const struct rcc_dev_info rcc_dev_table[] = { [RCC_GPIOA] = { .clk_domain = APB2, .line_num = 2 }, [RCC_GPIOB] = { .clk_domain = APB2, .line_num = 3 }, [RCC_GPIOC] = { .clk_domain = APB2, .line_num = 4 }, @@ -144,17 +141,12 @@ void rcc_clk_init(rcc_sysclk_src sysclk_src, * @param id Clock ID of the peripheral to turn on. */ void rcc_clk_enable(rcc_clk_id id) { - static const __io uint32* enable_regs[] = { + static __io uint32* enable_regs[] = { [APB1] = &RCC_BASE->APB1ENR, [APB2] = &RCC_BASE->APB2ENR, [AHB] = &RCC_BASE->AHBENR, }; - - rcc_clk_domain clk_domain = rcc_dev_clk(id); - __io uint32* enr = (__io uint32*)enable_regs[clk_domain]; - uint8 lnum = rcc_dev_table[id].line_num; - - bb_peri_set_bit(enr, lnum, 1); + rcc_do_clk_enable(enable_regs, id); } /** @@ -162,26 +154,11 @@ void rcc_clk_enable(rcc_clk_id id) { * @param id Clock ID of the peripheral to reset. */ void rcc_reset_dev(rcc_clk_id id) { - static const __io uint32* reset_regs[] = { + static __io uint32* reset_regs[] = { [APB1] = &RCC_BASE->APB1RSTR, [APB2] = &RCC_BASE->APB2RSTR, }; - - rcc_clk_domain clk_domain = rcc_dev_clk(id); - __io void* addr = (__io void*)reset_regs[clk_domain]; - uint8 lnum = rcc_dev_table[id].line_num; - - bb_peri_set_bit(addr, lnum, 1); - bb_peri_set_bit(addr, lnum, 0); -} - -/** - * @brief Get a peripheral's clock domain - * @param id Clock ID of the peripheral whose clock domain to return - * @return Clock source for the given clock ID - */ -rcc_clk_domain rcc_dev_clk(rcc_clk_id id) { - return rcc_dev_table[id].clk_domain; + rcc_do_reset_dev(reset_regs, id); } /** @@ -197,9 +174,5 @@ void rcc_set_prescaler(rcc_prescaler prescaler, uint32 divider) { [RCC_PRESCALER_USB] = RCC_CFGR_USBPRE, [RCC_PRESCALER_ADC] = RCC_CFGR_ADCPRE, }; - - uint32 cfgr = RCC_BASE->CFGR; - cfgr &= ~masks[prescaler]; - cfgr |= divider; - RCC_BASE->CFGR = cfgr; + rcc_do_set_prescaler(masks, prescaler, divider); } |