Rockbox open source high quality audio player as a Music Player Daemon
mpris
rockbox
mpd
libadwaita
audio
rust
zig
deno
iPod 1st Gen: Fix battery ADC not working due to the EABI compiler optimizing the delay loops away. Use udelay() instead, not wasting CPU time when the CPU is not boosted.
git-svn-id: svn://svn.rockbox.org/rockbox/trunk@27850 a1c6a512-1295-4272-9138-f99709370657
+7
-6
+7
-6
firmware/target/arm/ipod/1g2g/adc-ipod-1g2g.c
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-6
firmware/target/arm/ipod/1g2g/adc-ipod-1g2g.c
···
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#include "kernel.h"
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#include "adc.h"
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#include "adc-target.h"
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+
#include "system-target.h"
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static struct mutex adc_mtx SHAREDBSS_ATTR;
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···
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if ((IPOD_HW_REVISION >> 16) == 1)
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{
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-
int i, j;
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int i;
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unsigned pval = GPIOB_OUTPUT_VAL;
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GPIOB_OUTPUT_VAL = pval | 0x04; /* B2 -> high */
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-
for (i = 32; i > 0; --i);
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udelay(2);
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GPIOB_OUTPUT_VAL = pval; /* B2 -> low */
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-
for (i = 200; i > 0; --i);
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+
udelay(10);
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-
for (j = 0; j < 8; j++)
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for (i = 0; i < 8; i++)
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{
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GPIOB_OUTPUT_VAL = pval | 0x02; /* B1 -> high */
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-
for (i = 8; i > 0; --i);
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udelay(1);
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data = (data << 1) | ((GPIOB_INPUT_VAL & 0x08) >> 3);
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GPIOB_OUTPUT_VAL = pval; /* B1 -> low */
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for (i = 320; i > 0; --i);
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udelay(15);
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}
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}
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else if ((IPOD_HW_REVISION >> 16) == 2)