fix: correct register access for SimplePwm 32-bit timer support

- Replace `regs_gp16().ccr()` with `regs_1ch().ccr()` for proper register access
- Fix variable name from `cc_channel` to `channel`
- Ensure PWM waveform generation works correctly with 32-bit timer mode

1 files changed, 2 insertions, 2 deletions

diff --git a/embassy-stm32/src/timer/simple_pwm.rs b/embassy-stm32/src/timer/simple_pwm.rs
index 19c1610f7..e60bb5b06 100644
--- a/embassy-stm32/src/timer/simple_pwm.rs
+++ b/embassy-stm32/src/timer/simple_pwm.rs
@@ -345,7 +345,7 @@ impl<'d, T: GeneralInstance4Channel> SimplePwm<'d, T> {
                         dma,
                         req,
                         duty,
-                        self.inner.regs_gp16().ccr(cc_channel.index()).as_ptr() as *mut u16,
+                        self.inner.regs_1ch().ccr(channel.index()).as_ptr() as *mut u16,
                         dma_transfer_option,
                     )
                     .await
@@ -360,7 +360,7 @@ impl<'d, T: GeneralInstance4Channel> SimplePwm<'d, T> {
                         dma,
                         req,
                         duty,
-                        self.inner.regs_gp16().ccr(cc_channel.index()).as_ptr() as *mut u32,
+                        self.inner.regs_1ch().ccr(channel.index()).as_ptr() as *mut u32,
                         dma_transfer_option,
                     )
                     .await