From 3c8e76f679158d2a5cb1a16a7da1c4f48066ddfc Mon Sep 17 00:00:00 2001 From: TitanMKD Date: Sun, 10 Jun 2012 11:44:36 +0200 Subject: Added ROM to RAM code copy & exec with example of how to use it (miniblink_rom_to_ram). --- .../jellybean-lpc4330_rom_to_ram.ld | 35 +++++++++ .../hackrf-jellybean/miniblink_rom_to_ram/Makefile | 24 +++++++ .../hackrf-jellybean/miniblink_rom_to_ram/README | 12 ++++ .../miniblink_rom_to_ram/miniblink.c | 82 ++++++++++++++++++++++ 4 files changed, 153 insertions(+) create mode 100644 examples/lpc43xx/hackrf-jellybean/jellybean-lpc4330_rom_to_ram.ld create mode 100644 examples/lpc43xx/hackrf-jellybean/miniblink_rom_to_ram/Makefile create mode 100644 examples/lpc43xx/hackrf-jellybean/miniblink_rom_to_ram/README create mode 100644 examples/lpc43xx/hackrf-jellybean/miniblink_rom_to_ram/miniblink.c (limited to 'examples') diff --git a/examples/lpc43xx/hackrf-jellybean/jellybean-lpc4330_rom_to_ram.ld b/examples/lpc43xx/hackrf-jellybean/jellybean-lpc4330_rom_to_ram.ld new file mode 100644 index 0000000..385b081 --- /dev/null +++ b/examples/lpc43xx/hackrf-jellybean/jellybean-lpc4330_rom_to_ram.ld @@ -0,0 +1,35 @@ +/* + * This file is part of the libopencm3 project. + * + * Copyright (C) 2010 Uwe Hermann + * Copyright (C) 2012 Benjamin Vernoux + * + * This library is free software: you can redistribute it and/or modify + * it under the terms of the GNU Lesser General Public License as published by + * the Free Software Foundation, either version 3 of the License, or + * (at your option) any later version. + * + * This library is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU Lesser General Public License for more details. + * + * You should have received a copy of the GNU Lesser General Public License + * along with this library. If not, see . + */ + +/* Linker script for HackRF Jellybean (LPC4330, 1M SPI flash, 264K SRAM). */ + +/* Define memory regions. */ +MEMORY +{ + /* Physical address in Flash used to copy Code from Flash to RAM */ + rom_flash (rx) : ORIGIN = 0x80000000, LENGTH = 1M + /* rom is really the shadow region that points to SPI flash or elsewhere */ + rom (rx) : ORIGIN = 0x00000000, LENGTH = 1M + ram (rwx) : ORIGIN = 0x10000000, LENGTH = 128K + /* there are some additional RAM regions */ +} + +/* Include the common ld script. */ +INCLUDE libopencm3_lpc43xx_rom_to_ram.ld diff --git a/examples/lpc43xx/hackrf-jellybean/miniblink_rom_to_ram/Makefile b/examples/lpc43xx/hackrf-jellybean/miniblink_rom_to_ram/Makefile new file mode 100644 index 0000000..56cb540 --- /dev/null +++ b/examples/lpc43xx/hackrf-jellybean/miniblink_rom_to_ram/Makefile @@ -0,0 +1,24 @@ +## +## This file is part of the libopencm3 project. +## +## Copyright (C) 2010 Uwe Hermann +## +## This library is free software: you can redistribute it and/or modify +## it under the terms of the GNU Lesser General Public License as published by +## the Free Software Foundation, either version 3 of the License, or +## (at your option) any later version. +## +## This library is distributed in the hope that it will be useful, +## but WITHOUT ANY WARRANTY; without even the implied warranty of +## MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the +## GNU Lesser General Public License for more details. +## +## You should have received a copy of the GNU Lesser General Public License +## along with this library. If not, see . +## + +BINARY = miniblink + +LDSCRIPT = ../jellybean-lpc4330_rom_to_ram.ld + +include ../../Makefile.include diff --git a/examples/lpc43xx/hackrf-jellybean/miniblink_rom_to_ram/README b/examples/lpc43xx/hackrf-jellybean/miniblink_rom_to_ram/README new file mode 100644 index 0000000..02960fa --- /dev/null +++ b/examples/lpc43xx/hackrf-jellybean/miniblink_rom_to_ram/README @@ -0,0 +1,12 @@ +------------------------------------------------------------------------------ +README +------------------------------------------------------------------------------ + +This is the smallest-possible example program using libopencm3. + +It's intended for the Jellybean development board from the HackRF project: + +https://github.com/mossmann/hackrf + +It should blink LED1 on the board. +This example copy the Code from ROM to RAM and execute code from RAM. diff --git a/examples/lpc43xx/hackrf-jellybean/miniblink_rom_to_ram/miniblink.c b/examples/lpc43xx/hackrf-jellybean/miniblink_rom_to_ram/miniblink.c new file mode 100644 index 0000000..3b3919b --- /dev/null +++ b/examples/lpc43xx/hackrf-jellybean/miniblink_rom_to_ram/miniblink.c @@ -0,0 +1,82 @@ +/* +* This file is part of the libopencm3 project. +* +* Copyright (C) 2010 Uwe Hermann +* Copyright (C) 2012 Michael Ossmann +* +* This library is free software: you can redistribute it and/or modify +* it under the terms of the GNU Lesser General Public License as published by +* the Free Software Foundation, either version 3 of the License, or +* (at your option) any later version. +* +* This library is distributed in the hope that it will be useful, +* but WITHOUT ANY WARRANTY; without even the implied warranty of +* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the +* GNU Lesser General Public License for more details. +* +* You should have received a copy of the GNU Lesser General Public License +* along with this library. If not, see . +*/ + +#include +#include + +#include "../jellybean_conf.h" + +void gpio_setup(void) +{ + /* Configure SCU Pin Mux as GPIO */ + scu_pinmux(SCU_PINMUX_LED1, SCU_GPIO_FAST); + scu_pinmux(SCU_PINMUX_LED2, SCU_GPIO_FAST); + scu_pinmux(SCU_PINMUX_LED3, SCU_GPIO_FAST); + + scu_pinmux(SCU_PINMUX_EN1V8, SCU_GPIO_FAST); + + scu_pinmux(SCU_PINMUX_BOOT0, SCU_GPIO_FAST); + scu_pinmux(SCU_PINMUX_BOOT1, SCU_GPIO_FAST); + scu_pinmux(SCU_PINMUX_BOOT2, SCU_GPIO_FAST); + scu_pinmux(SCU_PINMUX_BOOT3, SCU_GPIO_FAST); + + /* Configure all GPIO as Input (safe state) */ + GPIO0_DIR = 0; + GPIO1_DIR = 0; + GPIO2_DIR = 0; + GPIO3_DIR = 0; + GPIO4_DIR = 0; + GPIO5_DIR = 0; + GPIO6_DIR = 0; + GPIO7_DIR = 0; + + /* Configure GPIO as Output */ + GPIO2_DIR |= (PIN_LED1|PIN_LED2|PIN_LED3); /* Configure GPIO2[1/2/8] (P4_1/2 P6_12) as output. */ + GPIO3_DIR |= PIN_EN1V8; /* GPIO3[6] on P6_10 as output. */ +} + +u32 boot0, boot1, boot2, boot3; + +int main(void) +{ + int i; + gpio_setup(); + + /* Set 1V8 */ + gpio_set(PORT_EN1V8, PIN_EN1V8); + + /* Blink LED1/2/3 on the board and Read BOOT0/1/2/3 pins. */ + while (1) + { + boot0 = BOOT0_STATE; + boot1 = BOOT1_STATE; + boot2 = BOOT2_STATE; + boot3 = BOOT3_STATE; + + gpio_set(PORT_LED1_3, (PIN_LED1|PIN_LED2|PIN_LED3)); /* LEDs on */ + for (i = 0; i < 2000000; i++) /* Wait a bit. */ + __asm__("nop"); + gpio_clear(PORT_LED1_3, (PIN_LED1|PIN_LED2|PIN_LED3)); /* LED off */ + for (i = 0; i < 2000000; i++) /* Wait a bit. */ + __asm__("nop"); + } + + return 0; +} -- cgit v1.2.3