0967eb4c24
I recently imported NuttX version 6.0 (and nsh) into a Microchip Studio project [1] on Windows to figure out what was going wrong with the avr32dev1 build. I also briefly checked NuttX version 10. I worked with the assumption that the avr32 (avr32dev1) specific changes to the codebase were minimal across NuttX releases. For the initial proof of concept I used Microchip Studio version 7.0 (with the recent Microchip's ASF updates). I use avr32-gcc (4.4.7) hosted here [2] for building NuttX for avr32dev1 on GNU/Linux. Even with the Microchip Studio project, I had initial debug problems with just stepping through the code a line at a time. I had to bring in crt0, a trampoline stub and the linker file from one of my older projects to really build on the suspicion I had with the linker file. Perhaps an older version of avr32-gcc did something differently. I am not sure about this. I used avr32-objdump to see the output sections of the generated elf file. I just had to tweak the linker script to ensure correct linking of the sections. With those changes, I was able to inspect the UART sections within NuttX Microchip Studio project. Second important change: the transmit pin: I had to reassign the pin to see the nsh console. These are the currently assigned UART pins: RX: PA_24 -> Physical IC pin 59 TX: PB_02 -> Physical IC pin 24 For the avr32dev1 board, they are pins: J1 (berg pin 28) and J2 (berg pin 10). In addition, the PR fixes silly compilation problems with avr32dev1. I have tested the nsh build with my avr32dev1 boards. I used Atmel ICE to program one of them (flash at 0x80000000) and dfu-programmer to test my other board (flash at 0x80002000). The other RS-232 parameters are the same as they were. References: [1]: https://github.com/ramangopalan/nuttx_avr32dev1 [2]: https://github.com/ramangopalan/avr32-gnu-toolchain-linux_x86_64
93 lines
2.9 KiB
Plaintext
93 lines
2.9 KiB
Plaintext
/****************************************************************************
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* boards/avr/at32uc3/avr32dev1/scripts/avr32dev1.ld
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*
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* Licensed to the Apache Software Foundation (ASF) under one or more
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* contributor license agreements. See the NOTICE file distributed with
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* this work for additional information regarding copyright ownership. The
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* ASF licenses this file to you under the Apache License, Version 2.0 (the
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* "License"); you may not use this file except in compliance with the
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* License. You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
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* WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
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* License for the specific language governing permissions and limitations
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* under the License.
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*
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****************************************************************************/
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ENTRY(_stext)
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/* The following assumes that the bootloader resides at 0x8000:0000 and so
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* links the application to execute after the bootloader at 0x8000:2000.
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* To link so that NuttX boots directly without using the bootloader,
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* change the flash definition to:
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*
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* flash (rxai!w) : ORIGIN = 0x80000000, LENGTH = 256K
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*/
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MEMORY
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{
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flash (rxai!w) : ORIGIN = 0x80002000, LENGTH = 256K - 8K
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intram (wxa!ri) : ORIGIN = 0x00000004, LENGTH = 32K
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userpage : ORIGIN = 0x80800000, LENGTH = 512
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factorypage : ORIGIN = 0x80800200, LENGTH = 512
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}
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SECTIONS
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{
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.text : {
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. = ALIGN(4);
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_stext = .;
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*(.vectors)
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*(.text .text.*)
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*(.fixup)
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*(.gnu.warning)
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*(.rodata .rodata.*)
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*(.gnu.linkonce.t.*)
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*(.glue_7)
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*(.glue_7t)
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*(.got)
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*(.gcc_except_table)
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*(.gnu.linkonce.r.*)
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. = ALIGN(4);
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_etext = .;
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} > flash
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_eronly = .; /* See below */
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.data : AT(_etext) {
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. = ALIGN(4);
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_sdata = .;
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*(.data .data.*)
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*(.gnu.linkonce.d.*)
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CONSTRUCTORS
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. = ALIGN(4);
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_edata = .;
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} > intram
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.bss : { /* BSS */
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_sbss = .;
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*(.bss .bss.*)
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*(.gnu.linkonce.b.*)
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*(COMMON)
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. = ALIGN(4);
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_ebss = .;
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} > intram
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/* Stabs debugging sections. */
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.stab 0 : { *(.stab) }
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.stabstr 0 : { *(.stabstr) }
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.stab.excl 0 : { *(.stab.excl) }
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.stab.exclstr 0 : { *(.stab.exclstr) }
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.stab.index 0 : { *(.stab.index) }
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.stab.indexstr 0 : { *(.stab.indexstr) }
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.comment 0 : { *(.comment) }
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.debug_abbrev 0 : { *(.debug_abbrev) }
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.debug_info 0 : { *(.debug_info) }
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.debug_line 0 : { *(.debug_line) }
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.debug_pubnames 0 : { *(.debug_pubnames) }
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.debug_aranges 0 : { *(.debug_aranges) }
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}
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