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authorTitanMKD2012-06-10 11:44:36 +0200
committerTitanMKD2012-06-10 11:44:36 +0200
commit3c8e76f679158d2a5cb1a16a7da1c4f48066ddfc (patch)
tree0f8f4b8e95125113f8c37a81230159d7571c4a1d /examples
parentd2b15c72be1d3d3a85598cffce237bbae8401f9d (diff)
Added ROM to RAM code copy & exec with example of how to use it (miniblink_rom_to_ram).
Diffstat (limited to 'examples')
-rw-r--r--examples/lpc43xx/hackrf-jellybean/jellybean-lpc4330_rom_to_ram.ld35
-rw-r--r--examples/lpc43xx/hackrf-jellybean/miniblink_rom_to_ram/Makefile24
-rw-r--r--examples/lpc43xx/hackrf-jellybean/miniblink_rom_to_ram/README12
-rw-r--r--examples/lpc43xx/hackrf-jellybean/miniblink_rom_to_ram/miniblink.c82
4 files changed, 153 insertions, 0 deletions
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 <uwe@hermann-uwe.de>
+ * Copyright (C) 2012 Benjamin Vernoux <titanmkd@gmail.com>
+ *
+ * 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 <http://www.gnu.org/licenses/>.
+ */
+
+/* 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 <uwe@hermann-uwe.de>
+##
+## 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 <http://www.gnu.org/licenses/>.
+##
+
+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 <uwe@hermann-uwe.de>
+* Copyright (C) 2012 Michael Ossmann <mike@ossmann.com>
+*
+* 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 <http://www.gnu.org/licenses/>.
+*/
+
+#include <libopencm3/lpc43xx/gpio.h>
+#include <libopencm3/lpc43xx/scu.h>
+
+#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;
+}