Mirror
/
klipper-dgus
mirror of https://github.com/Desuuuu/klipper.git
1
0
Fork 0
Code Issues Projects Releases Wiki Activity

atsam: Support reading chip based temperature sensor on sam3/sam4s 

Signed-off-by: Kevin O'Connor <kevin@koconnor.net>
This commit is contained in:
Kevin O'Connor 2020-10-05 11:28:57 -04:00
parent 6a67afaff1
commit 97d49105b7
1 changed files with 13 additions and 5 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

14
src/atsam/adc.c
View File

@ -1,6 +1,6 @@
// Analog to digital support
//
// Copyright (C) 2016-2018 Kevin O'Connor <kevin@koconnor.net>
// Copyright (C) 2016-2020 Kevin O'Connor <kevin@koconnor.net>
//
// This file may be distributed under the terms of the GNU GPLv3 license.
@ -12,17 +12,20 @@
#include "internal.h" // GPIO
#include "sched.h" // sched_shutdown
#define ADC_TEMPERATURE_PIN 0xfe
DECL_ENUMERATION("pin", "ADC_TEMPERATURE", ADC_TEMPERATURE_PIN);
static const uint8_t adc_pins[] = {
#if CONFIG_MACH_SAM3X
GPIO('A', 2), GPIO('A', 3), GPIO('A', 4), GPIO('A', 6),
GPIO('A', 22), GPIO('A', 23), GPIO('A', 24), GPIO('A', 16),
GPIO('B', 12), GPIO('B', 13), GPIO('B', 17), GPIO('B', 18),
GPIO('B', 19), GPIO('B', 20), GPIO('B', 21)
GPIO('B', 19), GPIO('B', 20), GPIO('B', 21), ADC_TEMPERATURE_PIN
#elif CONFIG_MACH_SAM4S
GPIO('A', 17), GPIO('A', 18), GPIO('A', 19), GPIO('A', 20),
GPIO('B', 0), GPIO('B', 1), GPIO('B', 2), GPIO('B', 3),
GPIO('A', 21), GPIO('A', 22), GPIO('C', 13), GPIO('C', 15),
GPIO('C', 12), GPIO('C', 29), GPIO('C', 30)
GPIO('C', 12), GPIO('C', 29), GPIO('C', 30), ADC_TEMPERATURE_PIN
#endif
};
@ -50,8 +53,13 @@ gpio_adc_setup(uint8_t pin)
| ADC_MR_TRANSFER(1));
}
if (pin == ADC_TEMPERATURE_PIN) {
// Enable temperature sensor
ADC->ADC_ACR |= ADC_ACR_TSON;
} else {
// Place pin in input floating mode
gpio_in_setup(pin, 0);
}
return (struct gpio_adc){ .chan = 1 << chan };
}