[Qemu-devel] [PATCH v2 2/7] STM32F2xx: Display PWM duty cycle from timer

[Alistair Francis]

If correctly configured allow the STM32F2xx timer to print
out the PWM duty cycle information.

Signed-off-by: Alistair Francis <alist...@alistair23.me>
---
V2:
 - Fix up if statement braces
 - Remove stm32f2xx_timer_set_alarm() call

 hw/timer/stm32f2xx_timer.c | 9 +++++++++
 1 file changed, 9 insertions(+)

diff --git a/hw/timer/stm32f2xx_timer.c b/hw/timer/stm32f2xx_timer.c
index ecadf9d..de4b8af 100644
--- a/hw/timer/stm32f2xx_timer.c
+++ b/hw/timer/stm32f2xx_timer.c
@@ -49,6 +49,15 @@ static void stm32f2xx_timer_interrupt(void *opaque)
         qemu_irq_pulse(s->irq);
         stm32f2xx_timer_set_alarm(s, s->hit_time);
     }
+
+    if (s->tim_ccmr1 & (TIM_CCMR1_OC2M2 + TIM_CCMR1_OC2M1) &&
+        !(s->tim_ccmr1 & TIM_CCMR1_OC2M0) &&
+        s->tim_ccmr1 & TIM_CCMR1_OC2PE &&
+        s->tim_ccer & TIM_CCER_CC2E) {
+        /* PWM 2 - Mode 1 */
+        DB_PRINT("Duty Cycle: %d%%\n",
+                s->tim_ccr2 / (100 * (s->tim_psc + 1)));
+    }
 }
 
 static inline int64_t stm32f2xx_ns_to_ticks(STM32F2XXTimerState *s, int64_t t)
-- 
2.1.4