114 lines
3.6 KiB
C
114 lines
3.6 KiB
C
/*
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* This file is part of the libopencm3 project.
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*
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* Copyright (C) 2010 Thomas Otto <tommi@viadmin.org>
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*
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* This library is free software: you can redistribute it and/or modify
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* it under the terms of the GNU Lesser General Public License as published by
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* the Free Software Foundation, either version 3 of the License, or
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* (at your option) any later version.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public License
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* along with this library. If not, see <http://www.gnu.org/licenses/>.
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*/
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#include <libopencm3/stm32/f1/rcc.h>
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#include <libopencm3/stm32/f1/flash.h>
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#include <libopencm3/stm32/f1/gpio.h>
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#include <libopencm3/stm32/usart.h>
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#include <libopencm3/stm32/timer.h>
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#include <libopencm3/stm32/nvic.h>
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#include <libopencm3/stm32/spi.h>
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#include "./dogm128.h"
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void gpio_setup(void)
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{
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/* Enable GPIOB clock. */
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rcc_peripheral_enable_clock(&RCC_APB2ENR, RCC_APB2ENR_IOPBEN);
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/* Set GPIO6/7 (in GPIO port B) to 'output push-pull' for the LEDs. */
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gpio_set_mode(GPIOB, GPIO_MODE_OUTPUT_2_MHZ,
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GPIO_CNF_OUTPUT_PUSHPULL, GPIO6);
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gpio_set_mode(GPIOB, GPIO_MODE_OUTPUT_2_MHZ,
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GPIO_CNF_OUTPUT_PUSHPULL, GPIO7);
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/* A0 of DOGM128 */
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gpio_set_mode(GPIOB, GPIO_MODE_OUTPUT_50_MHZ,
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GPIO_CNF_OUTPUT_PUSHPULL, GPIO14);
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/* Reset of DOGM128 */
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gpio_set_mode(GPIOB, GPIO_MODE_OUTPUT_50_MHZ,
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GPIO_CNF_OUTPUT_PUSHPULL, GPIO10);
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/* DOGM128/SPI2 clock and MOSI and NSS(CS1) */
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gpio_set_mode(GPIOB, GPIO_MODE_OUTPUT_50_MHZ,
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GPIO_CNF_OUTPUT_ALTFN_PUSHPULL, GPIO12);
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gpio_set_mode(GPIOB, GPIO_MODE_OUTPUT_50_MHZ,
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GPIO_CNF_OUTPUT_ALTFN_PUSHPULL, GPIO13);
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gpio_set_mode(GPIOB, GPIO_MODE_OUTPUT_50_MHZ,
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GPIO_CNF_OUTPUT_ALTFN_PUSHPULL, GPIO15);
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}
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void spi_setup(void)
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{
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/* The DOGM128 display is connected to SPI2, so initialise it. */
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rcc_peripheral_enable_clock(&RCC_APB1ENR, RCC_APB1ENR_SPI2EN);
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spi_set_unidirectional_mode(DOGM128_SPI); /* We want to send only. */
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spi_disable_crc(DOGM128_SPI); /* No CRC for this slave. */
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spi_set_dff_8bit(DOGM128_SPI); /* 8-bit dataword-length */
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spi_set_full_duplex_mode(DOGM128_SPI); /* Not receive-only */
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/* We want to handle the CS signal in software. */
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spi_enable_software_slave_management(DOGM128_SPI);
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spi_set_nss_high(DOGM128_SPI);
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/* PCLOCK/256 as clock. */
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spi_set_baudrate_prescaler(DOGM128_SPI, SPI_CR1_BR_FPCLK_DIV_256);
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/* We want to control everything and generate the clock -> master. */
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spi_set_master_mode(DOGM128_SPI);
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spi_set_clock_polarity_1(DOGM128_SPI); /* SCK idle state high. */
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/* Bit is taken on the second (rising edge) of SCK. */
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spi_set_clock_phase_1(DOGM128_SPI);
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spi_enable_ss_output(DOGM128_SPI);
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spi_enable(DOGM128_SPI);
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}
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int main(void)
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{
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rcc_clock_setup_in_hse_16mhz_out_72mhz();
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gpio_setup();
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spi_setup();
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gpio_clear(GPIOB, GPIO7); /* LED1 on */
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gpio_set(GPIOB, GPIO6); /* LED2 off */
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dogm128_init();
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dogm128_clear();
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dogm128_set_cursor(0, 56);
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dogm128_print_string("ABCDEFGHIJKLMNOPQRSTUVWXYZ");
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dogm128_set_cursor(0, 48);
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dogm128_print_string("abcdefghijklmnopqrstuvwxyz");
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dogm128_set_cursor(0, 40);
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dogm128_print_string(" !#$%&'()*+,-./0123456789");
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dogm128_set_cursor(0, 32);
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dogm128_print_string(":;<=>?@[\\]^_`{|}~");
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dogm128_set_dot(10, 10);
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dogm128_set_dot(20, 10);
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dogm128_set_dot(30, 10);
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dogm128_set_dot(40, 10);
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dogm128_set_dot(50, 10);
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dogm128_update_display();
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gpio_set(GPIOB, GPIO7); /* LED1 off */
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while (1); /* Halt. */
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return 0;
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}
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