diff options
author | Daniel Friesel <daniel.friesel@uos.de> | 2020-08-12 13:20:23 +0200 |
---|---|---|
committer | Daniel Friesel <daniel.friesel@uos.de> | 2020-08-12 13:20:23 +0200 |
commit | 23f7b0e4ed05685e89c5c1d8d92556106b0845ff (patch) | |
tree | 39c5ef116ef274fd38c7d6ef15d78711517e89ee | |
parent | 8458978ad5512dc813ac700d59983c56917fa205 (diff) |
stm32f446re: Add uptime counter and proper loop mode with standby in between
-rw-r--r-- | include/arch/stm32f446re-nucleo/driver/uptime.h | 27 | ||||
-rw-r--r-- | src/arch/stm32f446re-nucleo/Makefile.inc | 2 | ||||
-rw-r--r-- | src/arch/stm32f446re-nucleo/arch.cc | 51 | ||||
-rw-r--r-- | src/arch/stm32f446re-nucleo/driver/uptime.cc | 3 |
4 files changed, 80 insertions, 3 deletions
diff --git a/include/arch/stm32f446re-nucleo/driver/uptime.h b/include/arch/stm32f446re-nucleo/driver/uptime.h new file mode 100644 index 0000000..adace98 --- /dev/null +++ b/include/arch/stm32f446re-nucleo/driver/uptime.h @@ -0,0 +1,27 @@ +#ifndef UPTIME_H +#define UPTIME_H + +#include <stdint.h> + +class Uptime { + private: + Uptime(const Uptime ©); +#ifdef TIMER_S + uint32_t seconds; +#endif + + public: +#ifdef TIMER_S + Uptime () : seconds(0) {} +#else + Uptime () {} +#endif +#ifdef TIMER_S + inline uint32_t get_s() { return seconds; } + inline void tick_s() { seconds++; } +#endif +}; + +extern Uptime uptime; + +#endif diff --git a/src/arch/stm32f446re-nucleo/Makefile.inc b/src/arch/stm32f446re-nucleo/Makefile.inc index 54792d3..263fb2f 100644 --- a/src/arch/stm32f446re-nucleo/Makefile.inc +++ b/src/arch/stm32f446re-nucleo/Makefile.inc @@ -25,7 +25,7 @@ endif CXX_TARGETS += src/arch/stm32f446re-nucleo/driver/gpio.cc CXX_TARGETS += src/arch/stm32f446re-nucleo/driver/stdout.cc -#CXX_TARGETS += src/arch/stm32f446re-nucleo/driver/uptime.cc +CXX_TARGETS += src/arch/stm32f446re-nucleo/driver/uptime.cc ifneq ($(findstring stdin,${arch_drivers}), ) CXX_TARGETS += src/arch/stm32f446re-nucleo/driver/stdin.cc diff --git a/src/arch/stm32f446re-nucleo/arch.cc b/src/arch/stm32f446re-nucleo/arch.cc index 12a612a..4634088 100644 --- a/src/arch/stm32f446re-nucleo/arch.cc +++ b/src/arch/stm32f446re-nucleo/arch.cc @@ -1,3 +1,7 @@ +#include <libopencm3/cm3/nvic.h> +#include <libopencm3/stm32/rcc.h> +#include <libopencm3/stm32/gpio.h> +#include <libopencm3/stm32/timer.h> #include "arch.h" #ifdef __acweaving @@ -6,6 +10,27 @@ void Arch::setup(void) { + // NUCLEO-F443RE uses 8MHz STLINK clock as input + rcc_clock_setup_pll(&rcc_hse_8mhz_3v3[RCC_CLOCK_3V3_168MHZ]); +#ifdef WITH_LOOP + rcc_periph_clock_enable(RCC_TIM2); + nvic_enable_irq(NVIC_TIM2_IRQ); + rcc_periph_reset_pulse(RST_TIM2); + + + timer_set_mode(TIM2, TIM_CR1_CKD_CK_INT, + TIM_CR1_CMS_EDGE, TIM_CR1_DIR_UP); + // 10 kHz timer frequency + timer_set_prescaler(TIM2, ((rcc_apb1_frequency * 2) / 10000)); + + timer_disable_preload(TIM2); // ? + timer_continuous_mode(TIM2); // ? + + timer_set_period(TIM2, 10000); + + timer_enable_counter(TIM2); + timer_enable_irq(TIM2, TIM_DIER_UIE); +#endif } #ifdef WITH_WAKEUP @@ -37,9 +62,13 @@ void Arch::delay_ms(unsigned int const ms) void Arch::idle_loop(void) { while (1) { - delay_ms(1000); + pwr_set_standby_mode(); + __asm__("wfi"); #ifdef WITH_LOOP - loop(); + if (run_loop) { + loop(); + run_loop = 0; + } #endif } } @@ -52,3 +81,21 @@ void Arch::idle(void) } Arch arch; + +#if defined(WITH_LOOP) || defined(TIMER_S) + +#include "driver/uptime.h" + +void tim2_isr(void) +{ + if (timer_get_flag(TIM2, TIM_SR_UIF)) { + timer_clear_flag(TIM2, TIM_SR_UIF); +#ifdef WITH_LOOP + run_loop = 1; +#endif +#ifdef TIMER_S + uptime.tick_s(); +#endif + } +} +#endif diff --git a/src/arch/stm32f446re-nucleo/driver/uptime.cc b/src/arch/stm32f446re-nucleo/driver/uptime.cc new file mode 100644 index 0000000..388edb6 --- /dev/null +++ b/src/arch/stm32f446re-nucleo/driver/uptime.cc @@ -0,0 +1,3 @@ +#include "driver/uptime.h" + +Uptime uptime; |