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subrepo: subdir: "soh" merged: "ba904bbd0" upstream: origin: "https://github.com/HarbourMasters/soh.git" branch: "master" commit: "ba904bbd0" git-subrepo: version: "0.4.1" origin: "???" commit: "???"
21 lines
427 B
C
21 lines
427 B
C
#include "global.h"
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s32 osAiSetFrequency(u32 frequency) {
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u8 bitrate;
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f32 dacRateF = ((f32)osViClock / frequency) + 0.5f;
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u32 dacRate = dacRateF;
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if (dacRate < 132) {
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return -1;
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}
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bitrate = (dacRate / 66);
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if (bitrate > 16) {
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bitrate = 16;
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}
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HW_REG(AI_DACRATE_REG, u32) = dacRate - 1;
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HW_REG(AI_BITRATE_REG, u32) = bitrate - 1;
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return osViClock / (s32)dacRate;
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}
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