Unverified Commit 4bbe59b2 authored by Birte Kristina Friesel's avatar Birte Kristina Friesel
Browse files

stm32f7: Working counter

parent 6b3bfe26

README.md

+0 −2
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@@ -135,8 +135,6 @@ Peripheral communication: 


### STM32F746ZG (NUCLEO-F746ZG)



Preliminary support, timers may be incorrect.



Peripheral communication:



* UART output on USART3

src/arch/stm32f746zg-nucleo/Makefile.inc

+4 −4
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@@ -7,6 +7,7 @@ 
SERIAL_PORT ?= ttyACM0



cpu_freq ?= 216000000

counter_freq ?= 108000000



INCLUDES += -Iext/libopencm3/include
@@ -114,7 +115,7 @@ arch_clean: 
	${QUIET}rm -f ${OBJECTS}



cat:

	${QUIET}script/cat.py /dev/${SERIAL_PORT} 115200 ${cpu_freq} 65536

	${QUIET}script/cat.py /dev/${SERIAL_PORT} 115200 ${counter_freq} 4294967296



monitor:

	${QUIET}screen /dev/${SERIAL_PORT} 115200
@@ -126,9 +127,8 @@ arch_help: 


arch_info:

	@echo "CPU   Freq: ${cpu_freq} Hz"

	@echo "Timer Freq: ${timer_freq} Hz -> $(shell src/arch/stm32f746zg-nucleo/model.py f_timer "${cpu_freq}" "${timer_freq}")"

	@echo "I2C   Freq: ${i2c_freq} Hz"

	@echo "Counter Overflow: 4294967296/255"

	@echo "Count Freq: ${counter_freq} Hz"

	@echo "Counter Overflow: 4294967296/4294967295"

	@echo "Monitor: /dev/${SERIAL_PORT} 115200"



attributes: build/system.elf

src/arch/stm32f746zg-nucleo/arch.cc

+2 −0
Original line number Diff line number Diff line
@@ -21,6 +21,7 @@ void Arch::setup(void) 
#error Unsupported F_CPU

#endif



#ifdef CONFIG_arch_stm32f746zg_nucleo_driver_counter

	// counter

	rcc_periph_clock_enable(RCC_TIM2);

	nvic_enable_irq(NVIC_TIM2_IRQ);
@@ -32,6 +33,7 @@ void Arch::setup(void) 
	timer_continuous_mode(TIM2);

	timer_set_period(TIM2, 4294967295);

	timer_enable_irq(TIM2, TIM_DIER_UIE);

#endif



#ifdef CONFIG_loop

	rcc_periph_clock_enable(RCC_TIM3);