Merge #1419

1419: stm32/pwm: improve dead-time api r=Dirbaio a=xoviat



Co-authored-by: xoviat <[email protected]>

1 files changed, 3 insertions, 28 deletions

diff --git a/examples/stm32f4/src/bin/pwm_complementary.rs b/examples/stm32f4/src/bin/pwm_complementary.rs
index 6e17f3fd3..a8a68ed6e 100644
--- a/examples/stm32f4/src/bin/pwm_complementary.rs
+++ b/examples/stm32f4/src/bin/pwm_complementary.rs
@@ -4,7 +4,7 @@
 
 use defmt::*;
 use embassy_executor::Spawner;
-use embassy_stm32::pwm::complementary_pwm::{Ckd, ComplementaryPwm, ComplementaryPwmPin};
+use embassy_stm32::pwm::complementary_pwm::{ComplementaryPwm, ComplementaryPwmPin};
 use embassy_stm32::pwm::simple_pwm::PwmPin;
 use embassy_stm32::pwm::Channel;
 use embassy_stm32::time::khz;
@@ -31,34 +31,9 @@ async fn main(_spawner: Spawner) {
         khz(10),
     );
 
-    /*
-        Dead-time = T_clk * T_dts * T_dtg
-
-        T_dts:
-        This bit-field indicates the division ratio between the timer clock (CK_INT) frequency and the
-        dead-time and sampling clock (tDTS)used by the dead-time generators and the digital filters
-        (ETR, TIx),
-        00: tDTS=tCK_INT
-        01: tDTS=2*tCK_INT
-        10: tDTS=4*tCK_INT
-
-        T_dtg:
-        This bit-field defines the duration of the dead-time inserted between the complementary
-        outputs. DT correspond to this duration.
-        DTG[7:5]=0xx => DT=DTG[7:0]x tdtg with tdtg=tDTS.
-        DTG[7:5]=10x => DT=(64+DTG[5:0])xtdtg with Tdtg=2xtDTS.
-        DTG[7:5]=110 => DT=(32+DTG[4:0])xtdtg with Tdtg=8xtDTS.
-        DTG[7:5]=111 => DT=(32+DTG[4:0])xtdtg with Tdtg=16xtDTS.
-        Example if TDTS=125ns (8MHz), dead-time possible values are:
-        0 to 15875 ns by 125 ns steps,
-        16 us to 31750 ns by 250 ns steps,
-        32 us to 63us by 1 us steps,
-        64 us to 126 us by 2 us steps
-    */
-    pwm.set_dead_time_clock_division(Ckd::DIV1);
-    pwm.set_dead_time_value(0);
-
     let max = pwm.get_max_duty();
+    pwm.set_dead_time(max / 1024);
+
     pwm.enable(Channel::Ch1);
 
     info!("PWM initialized");