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atsamd: Enable chipid as usb serial number 

Signed-off-by: Kevin O'Connor <kevin@koconnor.net>
This commit is contained in:
Kevin O'Connor 2019-11-25 01:16:21 -05:00
parent 8f6efe5a7b
commit d7ec5505a6
4 changed files with 50 additions and 4 deletions
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6
docs/Config_Changes.md
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@ -6,9 +6,9 @@ All dates in this document are approximate.
# Changes # Changes
20191124: The USB names have changed on lpc176x and stm32. They now 20191124: The USB names have changed on lpc176x, stm32, and atsamd.
use the unique chip id by default. Update the "serial" setting in the They now use the unique chip id by default. Update the "serial"
"mcu" config section accordingly. setting in the "mcu" config section accordingly.
20191121: The pressure_advance_lookahead_time parameter has been 20191121: The pressure_advance_lookahead_time parameter has been
removed. See example.cfg for alternate configuration settings. removed. See example.cfg for alternate configuration settings.

1
src/atsamd/Kconfig
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@ -11,6 +11,7 @@ config ATSAMD_SELECT
select HAVE_GPIO_SPI select HAVE_GPIO_SPI
select HAVE_GPIO_HARD_PWM if MACH_SAMD21 select HAVE_GPIO_HARD_PWM if MACH_SAMD21
select HAVE_GPIO_BITBANGING select HAVE_GPIO_BITBANGING
select HAVE_CHIPID
config BOARD_DIRECTORY config BOARD_DIRECTORY
string string

2
src/atsamd/Makefile
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@ -21,7 +21,7 @@ $(OUT)klipper.elf: $(OUT)src/generic/armcm_link.ld
# Add source files # Add source files
src-y += atsamd/main.c atsamd/gpio.c generic/crc16_ccitt.c src-y += atsamd/main.c atsamd/gpio.c generic/crc16_ccitt.c
src-y += generic/armcm_boot.c generic/armcm_irq.c generic/armcm_reset.c src-y += generic/armcm_boot.c generic/armcm_irq.c generic/armcm_reset.c
src-$(CONFIG_USBSERIAL) += atsamd/usbserial.c generic/usb_cdc.c src-$(CONFIG_USBSERIAL) += atsamd/usbserial.c atsamd/chipid.c generic/usb_cdc.c
src-$(CONFIG_SERIAL) += atsamd/serial.c generic/serial_irq.c src-$(CONFIG_SERIAL) += atsamd/serial.c generic/serial_irq.c
src-$(CONFIG_HAVE_GPIO_ADC) += atsamd/adc.c src-$(CONFIG_HAVE_GPIO_ADC) += atsamd/adc.c
src-$(CONFIG_HAVE_GPIO_I2C) += atsamd/i2c.c src-$(CONFIG_HAVE_GPIO_I2C) += atsamd/i2c.c

45
src/atsamd/chipid.c Normal file
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@ -0,0 +1,45 @@
// Support for extracting the hardware chip id on atsamd
//
// Copyright (C) 2019 Kevin O'Connor <kevin@koconnor.net>
//
// This file may be distributed under the terms of the GNU GPLv3 license.
#include "autoconf.h" // CONFIG_USB_SERIAL_NUMBER_CHIPID
#include "generic/usb_cdc.h" // usb_fill_serial
#include "generic/usbstd.h" // usb_string_descriptor
#include "sched.h" // DECL_INIT
#define CHIP_UID_LEN 16
static struct {
struct usb_string_descriptor desc;
uint16_t data[CHIP_UID_LEN * 2];
} cdc_chipid;
struct usb_string_descriptor *
usbserial_get_serialid(void)
{
return &cdc_chipid.desc;
}
void
chipid_init(void)
{
if (!CONFIG_USB_SERIAL_NUMBER_CHIPID)
return;
uint32_t id[4];
if (CONFIG_MACH_SAMD21) {
id[0] = *(uint32_t*)0x0080A00C;
id[1] = *(uint32_t*)0x0080A040;
id[2] = *(uint32_t*)0x0080A044;
id[3] = *(uint32_t*)0x0080A048;
} else {
id[0] = *(uint32_t*)0x008061FC;
id[1] = *(uint32_t*)0x00806010;
id[2] = *(uint32_t*)0x00806014;
id[3] = *(uint32_t*)0x00806018;
}
usb_fill_serial(&cdc_chipid.desc, ARRAY_SIZE(cdc_chipid.data), id);
}
DECL_INIT(chipid_init);