Problems with TIM1CH1 output on STM32F103

I’ve been attempting to get PWM outputs working on the STM32F103. I’ve succesfully gotten one of the general purpose timers producing a proper PWM signal, but the Advanced Control Timer refuses to produce any output. I’ve verified that the timer itself is in fact running - the CNT value is incrementing as it should. I’ve also made sure that I’ve enabled alternate function output for the pin in question (in fact I’ve tried every possible output mode - I even set it to GPIO mode in order to verify that the connection to the pin on my board is working, which it was).

At this point I’m pretty stumped.

Any ideas?

Doh! Never mind, I found the problem. Turns out that TIM1 has a “Break and Dead Time Register” that disables output.