Add software
This commit is contained in:
RocketGod
@ -0,0 +1,36 @@
|
||||
##
|
||||
## This file is part of the libopencm3 project.
|
||||
##
|
||||
## Copyright (C) 2009 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/>.
|
||||
##
|
||||
|
||||
LIBNAME = libopencm3_sam3n
|
||||
|
||||
PREFIX ?= arm-none-eabi
|
||||
|
||||
CC = $(PREFIX)-gcc
|
||||
AR = $(PREFIX)-ar
|
||||
CFLAGS = -Os -g -Wall -Wextra -I../../../include -fno-common \
|
||||
-mcpu=cortex-m3 -mthumb $(FP_FLAGS) -Wstrict-prototypes \
|
||||
-ffunction-sections -fdata-sections -MD -DSAM3N
|
||||
# ARFLAGS = rcsv
|
||||
ARFLAGS = rcs
|
||||
OBJS = gpio.o pmc.o usart.o
|
||||
|
||||
VPATH += ../../cm3:../common
|
||||
|
||||
include ../../Makefile.include
|
||||
|
||||
@ -0,0 +1,106 @@
|
||||
/*
|
||||
* This file is part of the libopencm3 project.
|
||||
*
|
||||
* Copyright (C) 2009 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/>.
|
||||
*/
|
||||
|
||||
/* Generic linker script for STM32 targets using libopencm3. */
|
||||
|
||||
/* Memory regions must be defined in the ld script which includes this one. */
|
||||
|
||||
/* Enforce emmition of the vector table. */
|
||||
EXTERN (vector_table)
|
||||
|
||||
/* Define the entry point of the output file. */
|
||||
ENTRY(reset_handler)
|
||||
|
||||
/* Define sections. */
|
||||
SECTIONS
|
||||
{
|
||||
.text : {
|
||||
*(.vectors) /* Vector table */
|
||||
*(.text*) /* Program code */
|
||||
. = ALIGN(4);
|
||||
*(.rodata*) /* Read-only data */
|
||||
. = ALIGN(4);
|
||||
} >rom
|
||||
|
||||
/* C++ Static constructors/destructors, also used for __attribute__
|
||||
* ((constructor)) and the likes */
|
||||
.preinit_array : {
|
||||
. = ALIGN(4);
|
||||
__preinit_array_start = .;
|
||||
KEEP (*(.preinit_array))
|
||||
__preinit_array_end = .;
|
||||
} >rom
|
||||
.init_array : {
|
||||
. = ALIGN(4);
|
||||
__init_array_start = .;
|
||||
KEEP (*(SORT(.init_array.*)))
|
||||
KEEP (*(.init_array))
|
||||
__init_array_end = .;
|
||||
} >rom
|
||||
.fini_array : {
|
||||
. = ALIGN(4);
|
||||
__fini_array_start = .;
|
||||
KEEP (*(.fini_array))
|
||||
KEEP (*(SORT(.fini_array.*)))
|
||||
__fini_array_end = .;
|
||||
} >rom
|
||||
|
||||
/*
|
||||
* Another section used by C++ stuff, appears when using newlib with
|
||||
* 64bit (long long) printf support
|
||||
*/
|
||||
.ARM.extab : {
|
||||
*(.ARM.extab*)
|
||||
} >rom
|
||||
.ARM.exidx : {
|
||||
__exidx_start = .;
|
||||
*(.ARM.exidx*)
|
||||
__exidx_end = .;
|
||||
} >rom
|
||||
|
||||
. = ALIGN(4);
|
||||
_etext = .;
|
||||
|
||||
.data : {
|
||||
_data = .;
|
||||
*(.data*) /* Read-write initialized data */
|
||||
. = ALIGN(4);
|
||||
_edata = .;
|
||||
} >ram AT >rom
|
||||
_data_loadaddr = LOADADDR(.data);
|
||||
|
||||
.bss : {
|
||||
*(.bss*) /* Read-write zero initialized data */
|
||||
*(COMMON)
|
||||
. = ALIGN(4);
|
||||
_ebss = .;
|
||||
} >ram
|
||||
|
||||
/*
|
||||
* The .eh_frame section appears to be used for C++ exception handling.
|
||||
* You may need to fix this if you're using C++.
|
||||
*/
|
||||
/DISCARD/ : { *(.eh_frame) }
|
||||
|
||||
. = ALIGN(4);
|
||||
end = .;
|
||||
}
|
||||
|
||||
PROVIDE(_stack = ORIGIN(ram) + LENGTH(ram));
|
||||
|
||||
@ -0,0 +1,36 @@
|
||||
##
|
||||
## This file is part of the libopencm3 project.
|
||||
##
|
||||
## Copyright (C) 2009 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/>.
|
||||
##
|
||||
|
||||
LIBNAME = libopencm3_sam3x
|
||||
|
||||
PREFIX ?= arm-none-eabi
|
||||
|
||||
CC = $(PREFIX)-gcc
|
||||
AR = $(PREFIX)-ar
|
||||
CFLAGS = -Os -g -Wall -Wextra -I../../../include -fno-common \
|
||||
-mcpu=cortex-m3 -mthumb $(FP_FLAGS) -Wstrict-prototypes \
|
||||
-ffunction-sections -fdata-sections -MD -DSAM3X
|
||||
# ARFLAGS = rcsv
|
||||
ARFLAGS = rcs
|
||||
OBJS = gpio.o pmc.o usart.o
|
||||
|
||||
VPATH += ../../usb:../../cm3:../common
|
||||
|
||||
include ../../Makefile.include
|
||||
|
||||
@ -0,0 +1,106 @@
|
||||
/*
|
||||
* This file is part of the libopencm3 project.
|
||||
*
|
||||
* Copyright (C) 2009 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/>.
|
||||
*/
|
||||
|
||||
/* Generic linker script for STM32 targets using libopencm3. */
|
||||
|
||||
/* Memory regions must be defined in the ld script which includes this one. */
|
||||
|
||||
/* Enforce emmition of the vector table. */
|
||||
EXTERN (vector_table)
|
||||
|
||||
/* Define the entry point of the output file. */
|
||||
ENTRY(reset_handler)
|
||||
|
||||
/* Define sections. */
|
||||
SECTIONS
|
||||
{
|
||||
.text : {
|
||||
*(.vectors) /* Vector table */
|
||||
*(.text*) /* Program code */
|
||||
. = ALIGN(4);
|
||||
*(.rodata*) /* Read-only data */
|
||||
. = ALIGN(4);
|
||||
} >rom
|
||||
|
||||
/* C++ Static constructors/destructors, also used for __attribute__
|
||||
* ((constructor)) and the likes */
|
||||
.preinit_array : {
|
||||
. = ALIGN(4);
|
||||
__preinit_array_start = .;
|
||||
KEEP (*(.preinit_array))
|
||||
__preinit_array_end = .;
|
||||
} >rom
|
||||
.init_array : {
|
||||
. = ALIGN(4);
|
||||
__init_array_start = .;
|
||||
KEEP (*(SORT(.init_array.*)))
|
||||
KEEP (*(.init_array))
|
||||
__init_array_end = .;
|
||||
} >rom
|
||||
.fini_array : {
|
||||
. = ALIGN(4);
|
||||
__fini_array_start = .;
|
||||
KEEP (*(.fini_array))
|
||||
KEEP (*(SORT(.fini_array.*)))
|
||||
__fini_array_end = .;
|
||||
} >rom
|
||||
|
||||
/*
|
||||
* Another section used by C++ stuff, appears when using newlib with
|
||||
* 64bit (long long) printf support
|
||||
*/
|
||||
.ARM.extab : {
|
||||
*(.ARM.extab*)
|
||||
} >rom
|
||||
.ARM.exidx : {
|
||||
__exidx_start = .;
|
||||
*(.ARM.exidx*)
|
||||
__exidx_end = .;
|
||||
} >rom
|
||||
|
||||
. = ALIGN(4);
|
||||
_etext = .;
|
||||
|
||||
.data : {
|
||||
_data = .;
|
||||
*(.data*) /* Read-write initialized data */
|
||||
. = ALIGN(4);
|
||||
_edata = .;
|
||||
} >ram AT >rom
|
||||
_data_loadaddr = LOADADDR(.data);
|
||||
|
||||
.bss : {
|
||||
*(.bss*) /* Read-write zero initialized data */
|
||||
*(COMMON)
|
||||
. = ALIGN(4);
|
||||
_ebss = .;
|
||||
} >ram
|
||||
|
||||
/*
|
||||
* The .eh_frame section appears to be used for C++ exception handling.
|
||||
* You may need to fix this if you're using C++.
|
||||
*/
|
||||
/DISCARD/ : { *(.eh_frame) }
|
||||
|
||||
. = ALIGN(4);
|
||||
end = .;
|
||||
}
|
||||
|
||||
PROVIDE(_stack = ORIGIN(ram) + LENGTH(ram));
|
||||
|
||||
@ -0,0 +1,64 @@
|
||||
/*
|
||||
* This file is part of the libopencm3 project.
|
||||
*
|
||||
* Copyright (C) 2012 Gareth McMullin <gareth@blacksphere.co.nz>
|
||||
*
|
||||
* 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/sam/gpio.h>
|
||||
|
||||
void gpio_init(uint32_t port, uint32_t pins, enum gpio_flags flags)
|
||||
{
|
||||
switch (flags & 3) {
|
||||
case GPIO_FLAG_GPINPUT:
|
||||
/* input mode doesn't really exist, so we make a high
|
||||
* output in open-drain mode
|
||||
*/
|
||||
PIO_SODR(port) = pins;
|
||||
flags |= GPIO_FLAG_OPEN_DRAIN;
|
||||
/* fall through */
|
||||
case GPIO_FLAG_GPOUTPUT:
|
||||
PIO_OER(port) = pins;
|
||||
PIO_PER(port) = pins;
|
||||
break;
|
||||
case GPIO_FLAG_PERIPHA:
|
||||
PIO_ABSR(port) &= ~pins;
|
||||
PIO_PDR(port) = pins;
|
||||
break;
|
||||
case GPIO_FLAG_PERIPHB:
|
||||
PIO_ABSR(port) |= pins;
|
||||
PIO_PDR(port) = pins;
|
||||
}
|
||||
|
||||
if (flags & GPIO_FLAG_OPEN_DRAIN) {
|
||||
PIO_MDER(port) = pins;
|
||||
} else {
|
||||
PIO_MDDR(port) = pins;
|
||||
}
|
||||
|
||||
if (flags & GPIO_FLAG_PULL_UP) {
|
||||
PIO_PUER(port) = pins;
|
||||
} else {
|
||||
PIO_PUDR(port) = pins;
|
||||
}
|
||||
}
|
||||
|
||||
void gpio_toggle(uint32_t gpioport, uint32_t gpios)
|
||||
{
|
||||
uint32_t odsr = PIO_ODSR(gpioport);
|
||||
PIO_CODR(gpioport) = odsr & gpios;
|
||||
PIO_SODR(gpioport) = ~odsr & gpios;
|
||||
}
|
||||
|
||||
@ -0,0 +1,97 @@
|
||||
/*
|
||||
* This file is part of the libopencm3 project.
|
||||
*
|
||||
* Copyright (C) 2013 Gareth McMullin <gareth@blacksphere.co.nz>
|
||||
*
|
||||
* 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/sam/pmc.h>
|
||||
#include <libopencm3/sam/eefc.h>
|
||||
|
||||
/** Default peripheral clock frequency after reset. */
|
||||
uint32_t pmc_mck_frequency = 4000000;
|
||||
|
||||
void pmc_xtal_enable(bool en, uint8_t startup_time)
|
||||
{
|
||||
if (en) {
|
||||
CKGR_MOR = (CKGR_MOR & ~CKGR_MOR_MOSCXTST_MASK) |
|
||||
CKGR_MOR_KEY | CKGR_MOR_MOSCXTEN |
|
||||
(startup_time << 8);
|
||||
while (!(PMC_SR & PMC_SR_MOSCXTS));
|
||||
} else {
|
||||
CKGR_MOR = CKGR_MOR_KEY | (CKGR_MOR & ~CKGR_MOR_MOSCXTEN);
|
||||
}
|
||||
}
|
||||
|
||||
void pmc_plla_config(uint8_t mul, uint8_t div)
|
||||
{
|
||||
CKGR_PLLAR = CKGR_PLLAR_ONE | ((mul - 1) << 16) |
|
||||
CKGR_PLLAR_PLLACOUNT_MASK | div;
|
||||
while (!(PMC_SR & PMC_SR_LOCKA));
|
||||
}
|
||||
|
||||
void pmc_peripheral_clock_enable(uint8_t pid)
|
||||
{
|
||||
if (pid < 32) {
|
||||
PMC_PCER0 = 1 << pid;
|
||||
} else {
|
||||
PMC_PCER1 = 1 << (pid & 31);
|
||||
}
|
||||
}
|
||||
|
||||
void pmc_peripheral_clock_disable(uint8_t pid)
|
||||
{
|
||||
if (pid < 32) {
|
||||
PMC_PCDR0 = 1 << pid;
|
||||
} else {
|
||||
PMC_PCDR1 = 1 << (pid & 31);
|
||||
}
|
||||
}
|
||||
|
||||
void pmc_mck_set_source(enum mck_src src)
|
||||
{
|
||||
PMC_MCKR = (PMC_MCKR & ~PMC_MCKR_CSS_MASK) | src;
|
||||
while (!(PMC_SR & PMC_SR_MCKRDY));
|
||||
}
|
||||
|
||||
void pmc_clock_setup_in_xtal_12mhz_out_84mhz(void)
|
||||
{
|
||||
eefc_set_latency(4);
|
||||
|
||||
/* 12MHz external xtal, maximum possible startup time */
|
||||
pmc_xtal_enable(true, 0xff);
|
||||
/* Select as main oscillator */
|
||||
CKGR_MOR |= CKGR_MOR_KEY | CKGR_MOR_MOSCSEL;
|
||||
/* Multiply by 7 for 84MHz */
|
||||
pmc_plla_config(7, 1);
|
||||
pmc_mck_set_source(MCK_SRC_PLLA);
|
||||
|
||||
pmc_mck_frequency = 84000000;
|
||||
}
|
||||
|
||||
void pmc_clock_setup_in_rc_4mhz_out_84mhz(void)
|
||||
{
|
||||
eefc_set_latency(4);
|
||||
|
||||
/* Select as main oscillator */
|
||||
CKGR_MOR = CKGR_MOR_KEY |
|
||||
(CKGR_MOR & ~(CKGR_MOR_MOSCSEL | CKGR_MOR_MOSCRCF_MASK));
|
||||
/* Multiply by 21 for 84MHz */
|
||||
pmc_plla_config(21, 1);
|
||||
pmc_mck_set_source(MCK_SRC_PLLA);
|
||||
|
||||
pmc_mck_frequency = 84000000;
|
||||
}
|
||||
|
||||
@ -0,0 +1,108 @@
|
||||
/*
|
||||
* This file is part of the libopencm3 project.
|
||||
*
|
||||
* Copyright (C) 2013 Gareth McMullin <gareth@blacksphere.co.nz>
|
||||
*
|
||||
* 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/sam/usart.h>
|
||||
#include <libopencm3/sam/pmc.h>
|
||||
|
||||
void usart_set_baudrate(uint32_t usart, uint32_t baud)
|
||||
{
|
||||
USART_BRGR(usart) = pmc_mck_frequency / (16 * baud);
|
||||
}
|
||||
|
||||
void usart_set_databits(uint32_t usart, int bits)
|
||||
{
|
||||
USART_MR(usart) = (USART_MR(usart) & ~USART_MR_CHRL_MASK) |
|
||||
((bits - 5) << 6);
|
||||
}
|
||||
|
||||
void usart_set_stopbits(uint32_t usart, enum usart_stopbits sb)
|
||||
{
|
||||
USART_MR(usart) = (USART_MR(usart) & ~USART_MR_NBSTOP_MASK) |
|
||||
(sb << 12);
|
||||
}
|
||||
|
||||
void usart_set_parity(uint32_t usart, enum usart_parity par)
|
||||
{
|
||||
USART_MR(usart) = (USART_MR(usart) & ~USART_MR_PAR_MASK) | (par << 9);
|
||||
}
|
||||
|
||||
void usart_set_mode(uint32_t usart, enum usart_mode mode)
|
||||
{
|
||||
USART_CR(usart) =
|
||||
(mode & USART_MODE_RX) ? USART_CR_RXEN : USART_CR_RXDIS;
|
||||
USART_CR(usart) = (mode & USART_MODE_TX) ? USART_CR_TXEN
|
||||
: USART_CR_TXDIS;
|
||||
}
|
||||
|
||||
void usart_set_flow_control(uint32_t usart, enum usart_flowcontrol fc)
|
||||
{
|
||||
USART_MR(usart) = (USART_MR(usart) & ~USART_MR_MODE_MASK) |
|
||||
(fc ? USART_MR_MODE_HW_HANDSHAKING : 0);
|
||||
}
|
||||
|
||||
void usart_enable(uint32_t usart)
|
||||
{
|
||||
}
|
||||
|
||||
void usart_disable(uint32_t usart)
|
||||
{
|
||||
}
|
||||
|
||||
void usart_send(uint32_t usart, uint16_t data)
|
||||
{
|
||||
USART_THR(usart) = data;
|
||||
}
|
||||
|
||||
uint16_t usart_recv(uint32_t usart)
|
||||
{
|
||||
return USART_RHR(usart) & 0x1f;
|
||||
}
|
||||
|
||||
void usart_wait_send_ready(uint32_t usart)
|
||||
{
|
||||
while ((USART_CSR(usart) & USART_CSR_TXRDY) == 0);
|
||||
}
|
||||
|
||||
void usart_wait_recv_ready(uint32_t usart)
|
||||
{
|
||||
while ((USART_CSR(usart) & USART_CSR_RXRDY) == 0);
|
||||
}
|
||||
|
||||
void usart_send_blocking(uint32_t usart, uint16_t data)
|
||||
{
|
||||
usart_wait_send_ready(usart);
|
||||
usart_send(usart, data);
|
||||
}
|
||||
|
||||
uint16_t usart_recv_blocking(uint32_t usart)
|
||||
{
|
||||
usart_wait_recv_ready(usart);
|
||||
|
||||
return usart_recv(usart);
|
||||
}
|
||||
|
||||
void usart_enable_rx_interrupt(uint32_t usart)
|
||||
{
|
||||
USART_IER(usart) = USART_CSR_RXRDY;
|
||||
}
|
||||
|
||||
void usart_disable_rx_interrupt(uint32_t usart)
|
||||
{
|
||||
USART_IDR(usart) = USART_CSR_RXRDY;
|
||||
}
|
||||
Reference in New Issue
Block a user