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GNU/Linux: Use getrandom for ADC driver.

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Signed-off-by: NIIBE Yutaka <gniibe@fsij.org>
This commit is contained in:
NIIBE Yutaka
2021-02-17 16:24:22 +09:00
parent f84f6c1cac
commit 2fb3c1c503
2 changed files with 5 additions and 5 deletions
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2
ChangeLog
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@@ -1,5 +1,7 @@
2021-02-17 NIIBE Yutaka <gniibe@fsij.org> 2021-02-17 NIIBE Yutaka <gniibe@fsij.org>
* contrib/adc-gnu-linux.c (adc_start_conversion): Use getrandom.
* mcu/usb-usbip.c (usbip_run_server): Add start-up message. * mcu/usb-usbip.c (usbip_run_server): Add start-up message.
2021-02-16 NIIBE Yutaka <gniibe@fsij.org> 2021-02-16 NIIBE Yutaka <gniibe@fsij.org>

8
contrib/adc-gnu-linux.c
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@@ -3,7 +3,7 @@
* This ADC driver just fills pseudo random values. * This ADC driver just fills pseudo random values.
* It's completely useless other than for NeuG. * It's completely useless other than for NeuG.
* *
* Copyright (C) 2017 Free Software Initiative of Japan * Copyright (C) 2017, 2021 Free Software Initiative of Japan
* Author: NIIBE Yutaka <gniibe@fsij.org> * Author: NIIBE Yutaka <gniibe@fsij.org>
* *
* This file is a part of Chopstx, a thread library for embedded. * This file is a part of Chopstx, a thread library for embedded.
@@ -33,7 +33,7 @@
#include <chopstx.h> #include <chopstx.h>
#include "adc.h" #include "adc.h"
#define ADC_RANDOM_SEED 0x01034649 /* "Hello, father!" in Japanese */ #include <sys/random.h>
/* /*
* Do calibration for ADC. * Do calibration for ADC.
@@ -41,7 +41,6 @@
int int
adc_init (void) adc_init (void)
{ {
srandom (ADC_RANDOM_SEED);
return 0; return 0;
} }
@@ -55,8 +54,7 @@ uint32_t adc_buf[64];
void void
adc_start_conversion (int offset, int count) adc_start_conversion (int offset, int count)
{ {
while (count--) getrandom (adc_buf+offset, count, 0);
adc_buf[offset++] = random ();
} }