15. HPM Log
15.1. Overview
The hpm_log project demonstrates how to use the hpm_log component. It illustrates the adaptation method of the hardware engine by using the serial port as the output engine. Compared with the traditional printf, hpm_log has features such as non-blocking operation and timestamp, which make it easier to debug and analyze application programs.
15.2. Board Setting
No special settings
15.3. Running the example
When the project runs correctly, and the serial port terminal will output the following information:
==============================
hpm6800evk clock summary
==============================
cpu0: 600000000Hz
gpu0: 400000000Hz
axis: 200000000Hz
axic: 200000000Hz
axif: 400000000Hz
axid: 266666666Hz
axiv: 200000000Hz
axig: 400000000Hz
mchtmr0: 24000000Hz
xpi0: 133333333Hz
==============================
----------------------------------------------------------------------
$$\ $$\ $$$$$$$\ $$\ $$\ $$\
$$ | $$ |$$ __$$\ $$$\ $$$ |\__|
$$ | $$ |$$ | $$ |$$$$\ $$$$ |$$\ $$$$$$$\ $$$$$$\ $$$$$$\
$$$$$$$$ |$$$$$$$ |$$\$$\$$ $$ |$$ |$$ _____|$$ __$$\ $$ __$$\
$$ __$$ |$$ ____/ $$ \$$$ $$ |$$ |$$ / $$ | \__|$$ / $$ |
$$ | $$ |$$ | $$ |\$ /$$ |$$ |$$ | $$ | $$ | $$ |
$$ | $$ |$$ | $$ | \_/ $$ |$$ |\$$$$$$$\ $$ | \$$$$$$ |
\__| \__|\__| \__| \__|\__| \_______|\__| \______/
----------------------------------------------------------------------
hpm log
0.084890 [D] main:82: TICK 0
0.084928 [I] main:83: TICK 1
0.084940 [W] main:84: TICK 2
0.084952 [E] main:85: TICK 3
1.086635 [D] main:82: TICK 0
1.086651 [I] main:83: TICK 1
1.086662 [W] main:84: TICK 2
1.086674 [E] main:85: TICK 3
2.088353 [D] main:82: TICK 0
2.088369 [I] main:83: TICK 1
2.088380 [W] main:84: TICK 2
2.088392 [E] main:85: TICK 3
3.090071 [D] main:82: TICK 0
3.090087 [I] main:83: TICK 1
3.090098 [W] main:84: TICK 2
3.090110 [E] main:85: TICK 3
4.091789 [D] main:82: TICK 0
4.091804 [I] main:83: TICK 1
4.091816 [W] main:84: TICK 2
4.091829 [E] main:85: TICK 3