From: Lucjan Bryndza <lbryndza....@icloud.com>
The current implementation of timers does not work properly
even in basic functionality. A counter configured to report
an interrupt every 10ms reports the first interrupts after a
few seconds. There are also no properly implemented count up an
count down modes. This commit fixes bugs with interrupt
reporting and implements the basic modes of the counter's
time-base block.
Add timer update function using ptimer implementation
Signed-off-by: Lucjan Bryndza <lbryndza....@icloud.com>
---
hw/timer/stm32f2xx_timer.c | 22 ++++++++++++++++++++++
1 file changed, 22 insertions(+)
diff --git a/hw/timer/stm32f2xx_timer.c b/hw/timer/stm32f2xx_timer.c
index 9261090b84..62c98b5f04 100644
--- a/hw/timer/stm32f2xx_timer.c
+++ b/hw/timer/stm32f2xx_timer.c
@@ -68,6 +68,28 @@ static void stm32f2xx_timer_set_count(STM32F2XXTimerState
*s, uint32_t cnt)
}
}
+static void stm32f2xx_timer_update(STM32F2XXTimerState *s)
+{
+ if (s->tim_cr1 & TIM_CR1_DIR) {
+ s->count_mode = TIMER_DOWN_COUNT;
+ } else {
+ s->count_mode = TIMER_UP_COUNT;
+ }
+
+ if (s->tim_cr1 & TIM_CR1_CMS) {
+ s->count_mode = TIMER_UP_COUNT;
+ }
+
+ if (s->tim_cr1 & TIM_CR1_CEN) {
+ DB_PRINT("Enabling timer\n");
+ ptimer_set_freq(s->timer, s->freq_hz);
+ ptimer_run(s->timer, !(s->tim_cr1 & 0x04));
+ } else {
+ DB_PRINT("Disabling timer\n");
+ ptimer_stop(s->timer);
+ }
+}
+
static void stm32f2xx_timer_reset(DeviceState *dev)
{
--
2.38.5
