jappel/VersaMCU
1
0
Fork 1
Code Issues Pull requests Projects Releases 1 Packages Wiki Activity Actions

Add UF2 bootloader for USB firmware flashing

Browse source 
Vendored and trimmed from microsoft/uf2-samdx1, adapted to the actual
ATSAMD21G17D (128 KiB flash / 16 KiB RAM), fixing the flash/RAM-size
mismatch that the previously commented-out SAM-BA bootloader target
had (it assumed a 256 KiB SAMD21G18A). Builds as a standalone
PlatformIO environment (bootloader/platformio.ini), no python2/make
dependency. Compiles clean, fits in the 8 KiB bootloader region
(7292/8192 bytes). Not yet flashed/verified on real hardware.
This commit is contained in:
cjjohn 2026-08-03 20:56:58 +02:00
parent ce5db617a1
commit de52b57041
143 changed files with 69119 additions and 0 deletions
Download patch file Download diff file Expand all files Collapse all files

89
bootloader/lib/samd21/samd21a/include/component/pac.h Normal file
View file

@ -0,0 +1,89 @@
/**
* \file
*
* \brief Component description for PAC
*
* Copyright (c) 2016 Atmel Corporation,
* a wholly owned subsidiary of Microchip Technology Inc.
*
* \asf_license_start
*
* \page License
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the Licence at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*
* \asf_license_stop
*
*/
#ifndef _SAMD21_PAC_COMPONENT_
#define _SAMD21_PAC_COMPONENT_
/* ========================================================================== */
/** SOFTWARE API DEFINITION FOR PAC */
/* ========================================================================== */
/** \addtogroup SAMD21_PAC Peripheral Access Controller */
/*@{*/
#define PAC_U2211
#define REV_PAC 0x101
/* -------- PAC_WPCLR : (PAC Offset: 0x0) (R/W 32) Write Protection Clear -------- */
#if !(defined(__ASSEMBLY__) || defined(__IAR_SYSTEMS_ASM__))
typedef union {
struct {
uint32_t :1; /*!< bit: 0 Reserved */
uint32_t WP:31; /*!< bit: 1..31 Write Protection Clear */
} bit; /*!< Structure used for bit access */
uint32_t reg; /*!< Type used for register access */
} PAC_WPCLR_Type;
#endif /* !(defined(__ASSEMBLY__) || defined(__IAR_SYSTEMS_ASM__)) */
#define PAC_WPCLR_OFFSET 0x0 /**< \brief (PAC_WPCLR offset) Write Protection Clear */
#define PAC_WPCLR_RESETVALUE _U(0x00000000) /**< \brief (PAC_WPCLR reset_value) Write Protection Clear */
#define PAC_WPCLR_WP_Pos 1 /**< \brief (PAC_WPCLR) Write Protection Clear */
#define PAC_WPCLR_WP_Msk (_U(0x7FFFFFFF) << PAC_WPCLR_WP_Pos)
#define PAC_WPCLR_WP(value) (PAC_WPCLR_WP_Msk & ((value) << PAC_WPCLR_WP_Pos))
#define PAC_WPCLR_MASK _U(0xFFFFFFFE) /**< \brief (PAC_WPCLR) MASK Register */
/* -------- PAC_WPSET : (PAC Offset: 0x4) (R/W 32) Write Protection Set -------- */
#if !(defined(__ASSEMBLY__) || defined(__IAR_SYSTEMS_ASM__))
typedef union {
struct {
uint32_t :1; /*!< bit: 0 Reserved */
uint32_t WP:31; /*!< bit: 1..31 Write Protection Set */
} bit; /*!< Structure used for bit access */
uint32_t reg; /*!< Type used for register access */
} PAC_WPSET_Type;
#endif /* !(defined(__ASSEMBLY__) || defined(__IAR_SYSTEMS_ASM__)) */
#define PAC_WPSET_OFFSET 0x4 /**< \brief (PAC_WPSET offset) Write Protection Set */
#define PAC_WPSET_RESETVALUE _U(0x00000000) /**< \brief (PAC_WPSET reset_value) Write Protection Set */
#define PAC_WPSET_WP_Pos 1 /**< \brief (PAC_WPSET) Write Protection Set */
#define PAC_WPSET_WP_Msk (_U(0x7FFFFFFF) << PAC_WPSET_WP_Pos)
#define PAC_WPSET_WP(value) (PAC_WPSET_WP_Msk & ((value) << PAC_WPSET_WP_Pos))
#define PAC_WPSET_MASK _U(0xFFFFFFFE) /**< \brief (PAC_WPSET) MASK Register */
/** \brief PAC hardware registers */
#if !(defined(__ASSEMBLY__) || defined(__IAR_SYSTEMS_ASM__))
typedef struct {
__IO PAC_WPCLR_Type WPCLR; /**< \brief Offset: 0x0 (R/W 32) Write Protection Clear */
__IO PAC_WPSET_Type WPSET; /**< \brief Offset: 0x4 (R/W 32) Write Protection Set */
} Pac;
#endif /* !(defined(__ASSEMBLY__) || defined(__IAR_SYSTEMS_ASM__)) */
/*@}*/
#endif /* _SAMD21_PAC_COMPONENT_ */