A-Dunstan

atomMutexPut() corrupts unclaimed mutex when called from interrupt context

2

When atomMutexPut() is called from an interrupt context, curr_tcb_ptr is not checked against NULL. It is checked against mutex->owner, and if the mutex is unclaimed it will match and result...

support multiple startup hook functions for Teensy 4.x

6

If multiple libraries both override the same startup_\*\_hook function (or a library overrides it when a sketch wants to use it), they can't be used together since it causes a...

don't set do_zero flag when initializing extmem heap (improve performance when allocating)

1

Currently when the extmem_smalloc_pool is created, the do_zero flag is set which causes smalloc to always zero out allocated memory. This reduces allocation performance since it's only required by calls...

enable prefetching when accessing PSRAM over AHB

1

The prefetch feature of FlexSPI2 is not being activated in FLEXSPI2_AHBCR, reducing performance when PSRAM is accessed sequentially. This commit turns it on and allocates all prefetch buffer space to...

fix leap year calculation bug in makeTime()

1

makeTime() has a bug when checking if the specified year is a leap year, caused by failing to subtract 70 from the DateTimeFields.year. This function will demonstrate: ``` void printDateTime()...

Currently stubs provide basic implementations of abort() that spin forever e.g. `while(1) asm("WFI");` Shouldn't they at least do something obvious to notify an error has occurred? Like call unused_interrupt_vector() ?

Updating the toolchain to support C++17 added some new overloads for operators new and delete to support overly-aligned allocations. Overrides for these are missing from Teensyduino which results in the...