From d7a7fd9d3037a5e490be3e73027a11f779d7d35c Mon Sep 17 00:00:00 2001 From: TitanMKD Date: Tue, 5 Jun 2012 01:41:54 +0200 Subject: * Added SSP Driver (Not Tested). * Replaced leading space by tabulations. --- examples/lpc43xx/hackrf-jellybean/ssp/Makefile | 24 ++++++ examples/lpc43xx/hackrf-jellybean/ssp/README | 20 +++++ examples/lpc43xx/hackrf-jellybean/ssp/sspdemo.c | 99 +++++++++++++++++++++++++ 3 files changed, 143 insertions(+) create mode 100644 examples/lpc43xx/hackrf-jellybean/ssp/Makefile create mode 100644 examples/lpc43xx/hackrf-jellybean/ssp/README create mode 100644 examples/lpc43xx/hackrf-jellybean/ssp/sspdemo.c (limited to 'examples/lpc43xx/hackrf-jellybean/ssp') diff --git a/examples/lpc43xx/hackrf-jellybean/ssp/Makefile b/examples/lpc43xx/hackrf-jellybean/ssp/Makefile new file mode 100644 index 0000000..8a3b1cc --- /dev/null +++ b/examples/lpc43xx/hackrf-jellybean/ssp/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 = sspdemo + +LDSCRIPT = ../jellybean-lpc4330.ld + +include ../../Makefile.include diff --git a/examples/lpc43xx/hackrf-jellybean/ssp/README b/examples/lpc43xx/hackrf-jellybean/ssp/README new file mode 100644 index 0000000..9b43214 --- /dev/null +++ b/examples/lpc43xx/hackrf-jellybean/ssp/README @@ -0,0 +1,20 @@ +------------------------------------------------------------------------------ +README +------------------------------------------------------------------------------ + +This program exercises the SSP1 peripheral on Jellybean's LPC43xx. + + Jellybean (connector) + P9 SPI + |-----------------| + | Pin2 Pin4 Pin6 | +||------| | +|| Pin1 |Pin3 Pin5 | +||------|----------| +|-------| + +SSP1_MISO: Jellybean P9 SPI Pin6 +SSP1_MOSI: Jellybean P9 SPI Pin4 +SSP1_SCK: Jellybean P9 SPI Pin2 +SSP1_SSEL: Jellybean P9 SPI Pin3 +GND: Can be connected to P12 SD Pin1 diff --git a/examples/lpc43xx/hackrf-jellybean/ssp/sspdemo.c b/examples/lpc43xx/hackrf-jellybean/ssp/sspdemo.c new file mode 100644 index 0000000..388afc8 --- /dev/null +++ b/examples/lpc43xx/hackrf-jellybean/ssp/sspdemo.c @@ -0,0 +1,99 @@ +/* + * This file is part of the libopencm3 project. + * + * 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 . + */ + +#include +#include +#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 SSP1 Peripheral (to be moved later in SSP driver) */ + scu_pinmux(SCU_SSP1_MISO, (SCU_SSP_IO | SCU_CONF_FUNCTION5)); + scu_pinmux(SCU_SSP1_MOSI, (SCU_SSP_IO | SCU_CONF_FUNCTION5)); + scu_pinmux(SCU_SSP1_SCK, (SCU_SSP_IO | SCU_CONF_FUNCTION1)); + scu_pinmux(SCU_SSP1_SSEL, (SCU_SSP_IO | SCU_CONF_FUNCTION1)); + + /* 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. */ +} + +int main(void) +{ + int i; + u8 ssp_val; + u8 serial_clock_rate; + + gpio_setup(); + + /* FIX Me freq */ + serial_clock_rate = 128; + + ssp_init(SSP1_NUM, + SSP_DATA_8BITS, + SSP_FRAME_SPI, + SSP_CPOL_0_CPHA_0, + serial_clock_rate, + SSP_MODE_NORMAL, + SSP_MASTER, + SSP_SLAVE_OUT_ENABLE); + + ssp_val = 0x0; + + while (1) { + + ssp_write(SSP1_NUM, (u16)ssp_val); + + gpio_set(GPIO2, GPIOPIN1); /* LED on */ + + for (i = 0; i < 1000; i++) /* Wait a bit. */ + __asm__("nop"); + + gpio_clear(GPIO2, GPIOPIN1); /* LED off */ + + ssp_val++; + } + + return 0; +} -- cgit v1.2.3