Imxssi: Difference between revisions
From ArmadeusWiki
(creation) |
No edit summary |
||
| Line 1: | Line 1: | ||
SSI test tool, used for audio development purposes on [[APF9328]] and [[APF27]] | |||
==Installation== | |||
<pre class="host"> | <pre class="host"> | ||
$ make menuconfig | $ make menuconfig | ||
| Line 10: | Line 11: | ||
</pre> | </pre> | ||
==Usage== | |||
* Requirements: | * Requirements: | ||
TSC210x mclk: 16MHZ<br> | |||
FS rate: 32KHz<br> | FS rate: 32KHz<br> | ||
| Line 24: | Line 26: | ||
</pre> | </pre> | ||
* | * imxssi can generate an audio signal. Just use it that way: | ||
<pre class="apf"> | <pre class="apf"> | ||
# imxssi [-t type] [-l level] [-s samples] [--loop] | # imxssi [-t type] [-l level] [-s samples] [--loop] | ||
| Line 40: | Line 40: | ||
* next step: dma transfer | * next step: dma transfer | ||
==Dump SSI registers== | |||
<pre class="apf"> | |||
imxregs SCR_1 | |||
imxregs SISR_1 | |||
imxregs SIER_1 | |||
imxregs STCR_1 | |||
imxregs SRCR_1 | |||
imxregs STCCR_1 | |||
imxregs SRCCR_1 | |||
imxregs SFCSR_1 | |||
</pre> | |||
==Links== | |||
[[Category:Audio]] | |||
Latest revision as of 11:56, 4 January 2010
SSI test tool, used for audio development purposes on APF9328 and APF27
Installation
$ make menuconfig
Package Selection for the target --->
Armadeus specific tools/utilities --->
[*] imxssi
Usage
- Requirements:
TSC210x mclk: 16MHZ
FS rate: 32KHz
- U-Boot: Enable i.MX register access from user space in U-Boot:
BIOS> run unlock_regs
- Linux: Load tsc driver
# modprobe tsc2102
- imxssi can generate an audio signal. Just use it that way:
# imxssi [-t type] [-l level] [-s samples] [--loop]
- type can be 0: triangular signal or 1: sinusoïdal signal
- samples: period of the signal in number of samples per channel
- level: Signal level coefficient [0.0 .. 1.0]
For example to produce a 300Hz 5v(pk-pk) sinusoid:
# imxssi -t 1 -s 50 -l 0.15
- next step: dma transfer
Dump SSI registers
imxregs SCR_1 imxregs SISR_1 imxregs SIER_1 imxregs STCR_1 imxregs SRCR_1 imxregs STCCR_1 imxregs SRCCR_1 imxregs SFCSR_1
