diff options
| author | Kevin O'Connor <kevin@koconnor.net> | 2019-11-25 01:16:21 -0500 |
|---|---|---|
| committer | Kevin O'Connor <kevin@koconnor.net> | 2019-11-25 19:30:31 -0500 |
| commit | d7ec5505a6b517e927c93b95b13480eb85e42740 (patch) | |
| tree | ec016570cde7495ef3c29d6c2e8304ee38d924b6 /src | |
| parent | 8f6efe5a7b8a830b6cd17b7c378fc4f2fa92f069 (diff) | |
| download | kutter-d7ec5505a6b517e927c93b95b13480eb85e42740.tar.gz kutter-d7ec5505a6b517e927c93b95b13480eb85e42740.tar.xz kutter-d7ec5505a6b517e927c93b95b13480eb85e42740.zip | |
atsamd: Enable chipid as usb serial number
Signed-off-by: Kevin O'Connor <kevin@koconnor.net>
Diffstat (limited to 'src')
| -rw-r--r-- | src/atsamd/Kconfig | 1 | ||||
| -rw-r--r-- | src/atsamd/Makefile | 2 | ||||
| -rw-r--r-- | src/atsamd/chipid.c | 45 |
3 files changed, 47 insertions, 1 deletions
diff --git a/src/atsamd/Kconfig b/src/atsamd/Kconfig index b847291c..5fb0b26b 100644 --- a/src/atsamd/Kconfig +++ b/src/atsamd/Kconfig @@ -11,6 +11,7 @@ config ATSAMD_SELECT select HAVE_GPIO_SPI select HAVE_GPIO_HARD_PWM if MACH_SAMD21 select HAVE_GPIO_BITBANGING + select HAVE_CHIPID config BOARD_DIRECTORY string diff --git a/src/atsamd/Makefile b/src/atsamd/Makefile index 2ff91df1..3fe2a4e9 100644 --- a/src/atsamd/Makefile +++ b/src/atsamd/Makefile @@ -21,7 +21,7 @@ $(OUT)klipper.elf: $(OUT)src/generic/armcm_link.ld # Add source files src-y += atsamd/main.c atsamd/gpio.c generic/crc16_ccitt.c src-y += generic/armcm_boot.c generic/armcm_irq.c generic/armcm_reset.c -src-$(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-$(CONFIG_HAVE_GPIO_ADC) += atsamd/adc.c src-$(CONFIG_HAVE_GPIO_I2C) += atsamd/i2c.c diff --git a/src/atsamd/chipid.c b/src/atsamd/chipid.c new file mode 100644 index 00000000..a4e378bc --- /dev/null +++ b/src/atsamd/chipid.c @@ -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); |