3diy
/
klipper
1
0
Fork 0
Code Issues Pull Requests Packages Projects Releases Wiki Activity

pru: Compile the irq_poll() function with -O2 optimization 

Compile the PRU binary with -Os optimization, but request that the
timer dispatch code be compiled with -O2 optimization.  This improves
the performance of timers slightly.

Signed-off-by: Kevin O'Connor <kevin@koconnor.net>
This commit is contained in:
Kevin O'Connor 2017-08-15 11:05:30 -04:00
parent 71bb7acb8e
commit 0adea120cd
2 changed files with 2 additions and 2 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

2
docs/Features.md
View File

@ -86,7 +86,7 @@ represent total number of steps per second on the micro-controller.
| 20Mhz AVR | 189K | 125K |
| 16Mhz AVR | 151K | 100K |
| Arduino Due (ARM) | 382K | 337K |
| Beaglebone PRU | 680K | 680K |
| Beaglebone PRU | 689K | 689K |
On AVR platforms, the highest achievable step rate is with just one
stepper stepping. On the Due, the highest step rate is with two

2
src/pru/main.c
View File

@ -89,7 +89,7 @@ _irq_poll(void)
}
CT_INTC.SECR0 = (1 << IEP_EVENT) | (1 << KICK_PRU1_EVENT);
}
void
void __attribute__((optimize("O2")))
irq_poll(void)
{
if (read_r31() & (1 << (WAKE_PRU1_IRQ + R31_IRQ_OFFSET)))