From 4bbe59b24be734e42de76ea59d2e7d68a6c92c94 Mon Sep 17 00:00:00 2001
From: Birte Kristina Friesel <birte.friesel@uos.de>
Date: Thu, 15 Feb 2024 16:59:42 +0100
Subject: [PATCH] stm32f7: Working counter
---
README.md | 2 --
src/arch/stm32f746zg-nucleo/Makefile.inc | 8 ++++----
src/arch/stm32f746zg-nucleo/arch.cc | 2 ++
3 files changed, 6 insertions(+), 6 deletions(-)
diff --git a/README.md b/README.md
index 4997ab5..c7983d4 100644
--- a/README.md
+++ b/README.md
@@ -135,8 +135,6 @@ Peripheral communication:
### STM32F746ZG (NUCLEO-F746ZG)
-Preliminary support, timers may be incorrect.
-
Peripheral communication:
* UART output on USART3
diff --git a/src/arch/stm32f746zg-nucleo/Makefile.inc b/src/arch/stm32f746zg-nucleo/Makefile.inc
index 17c7e65..fada19d 100644
--- a/src/arch/stm32f746zg-nucleo/Makefile.inc
+++ b/src/arch/stm32f746zg-nucleo/Makefile.inc
@@ -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
diff --git a/src/arch/stm32f746zg-nucleo/arch.cc b/src/arch/stm32f746zg-nucleo/arch.cc
index 4adb883..443a2cf 100644
--- a/src/arch/stm32f746zg-nucleo/arch.cc
+++ b/src/arch/stm32f746zg-nucleo/arch.cc
@@ -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);
--
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