From cff706e3ca3823ffb388a4e87c4ef8bf925945c4 Mon Sep 17 00:00:00 2001 From: Fergus Noble Date: Thu, 15 Sep 2011 01:20:45 -0700 Subject: Rename F1 examples folder. --- examples/stm32f1/stm32-h103/usart_printf/Makefile | 23 +++++ .../stm32f1/stm32-h103/usart_printf/usart_printf.c | 108 +++++++++++++++++++++ .../stm32-h103/usart_printf/usart_printf.ld | 31 ++++++ 3 files changed, 162 insertions(+) create mode 100644 examples/stm32f1/stm32-h103/usart_printf/Makefile create mode 100644 examples/stm32f1/stm32-h103/usart_printf/usart_printf.c create mode 100644 examples/stm32f1/stm32-h103/usart_printf/usart_printf.ld (limited to 'examples/stm32f1/stm32-h103/usart_printf') diff --git a/examples/stm32f1/stm32-h103/usart_printf/Makefile b/examples/stm32f1/stm32-h103/usart_printf/Makefile new file mode 100644 index 0000000..fb26208 --- /dev/null +++ b/examples/stm32f1/stm32-h103/usart_printf/Makefile @@ -0,0 +1,23 @@ +## +## This file is part of the libopencm3 project. +## +## Copyright (C) 2009 Uwe Hermann +## +## This program is free software: you can redistribute it and/or modify +## it under the terms of the GNU General Public License as published by +## the Free Software Foundation, either version 3 of the License, or +## (at your option) any later version. +## +## This program 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 General Public License for more details. +## +## You should have received a copy of the GNU General Public License +## along with this program. If not, see . +## + +BINARY = usart_printf + +include ../../Makefile.include + diff --git a/examples/stm32f1/stm32-h103/usart_printf/usart_printf.c b/examples/stm32f1/stm32-h103/usart_printf/usart_printf.c new file mode 100644 index 0000000..26fcee6 --- /dev/null +++ b/examples/stm32f1/stm32-h103/usart_printf/usart_printf.c @@ -0,0 +1,108 @@ +/* + * This file is part of the libopencm3 project. + * + * Copyright (C) 2009 Uwe Hermann , + * 2011 Piotr Esden-Tempski + * + * This program is free software: you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation, either version 3 of the License, or + * (at your option) any later version. + * + * This program 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 General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program. If not, see . + */ + +#include +#include +#include +#include + +#include +#include + +void clock_setup(void) +{ + rcc_clock_setup_in_hse_8mhz_out_72mhz(); + + /* Enable GPIOA clock (for LED GPIOs). */ + rcc_peripheral_enable_clock(&RCC_APB2ENR, RCC_APB2ENR_IOPCEN); + + /* Enable clocks for GPIO port A (for GPIO_USART1_TX) and USART1. */ + rcc_peripheral_enable_clock(&RCC_APB2ENR, RCC_APB2ENR_IOPAEN | + RCC_APB2ENR_AFIOEN | + RCC_APB2ENR_USART1EN); +} + +void usart_setup(void) +{ + /* Setup GPIO pin GPIO_USART1_RE_TX on GPIO port B for transmit. */ + gpio_set_mode(GPIOA, GPIO_MODE_OUTPUT_50_MHZ, + GPIO_CNF_OUTPUT_ALTFN_PUSHPULL, GPIO_USART1_TX); + + /* Setup UART parameters. */ + usart_set_baudrate(USART1, 230400); + usart_set_databits(USART1, 8); + usart_set_stopbits(USART1, USART_STOPBITS_1); + usart_set_parity(USART1, USART_PARITY_NONE); + usart_set_flow_control(USART1, USART_FLOWCONTROL_NONE); + usart_set_mode(USART1, USART_MODE_TX); + + /* Finally enable the USART. */ + usart_enable(USART1); +} + +void gpio_setup(void) +{ + gpio_set(GPIOC, GPIO12); + + /* Setup GPIO6 and 7 (in GPIO port A) for led use. */ + gpio_set_mode(GPIOC, GPIO_MODE_OUTPUT_50_MHZ, + GPIO_CNF_OUTPUT_PUSHPULL, GPIO12); +} + +int _write (int file, char *ptr, int len) +{ + int i; + + if (file == 1) { + for (i = 0; i < len; i++){ + usart_send_blocking(USART1, ptr[i]); + } + + return i; + } + + errno = EIO; + return -1; +} + +int main(void) +{ + int counter = 0; + float fcounter = 0.0; + double dcounter = 0.0; + + clock_setup(); + gpio_setup(); + usart_setup(); + + /* + * Write Hello World an integer, float and double all over + * again while incrementing the numbers. + */ + while (1) { + gpio_toggle(GPIOC, GPIO12); + printf("Hello World! %i %f %f\r\n", counter, fcounter, dcounter); + counter++; + fcounter+=0.01; + dcounter+=0.01; + } + + return 0; +} diff --git a/examples/stm32f1/stm32-h103/usart_printf/usart_printf.ld b/examples/stm32f1/stm32-h103/usart_printf/usart_printf.ld new file mode 100644 index 0000000..7899773 --- /dev/null +++ b/examples/stm32f1/stm32-h103/usart_printf/usart_printf.ld @@ -0,0 +1,31 @@ +/* + * This file is part of the libopencm3 project. + * + * Copyright (C) 2009 Uwe Hermann + * + * This program is free software: you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation, either version 3 of the License, or + * (at your option) any later version. + * + * This program 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 General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program. If not, see . + */ + +/* Linker script for Open-BLDC (STM32F103CBT6, 128K flash, 20K RAM). */ + +/* Define memory regions. */ +MEMORY +{ + rom (rx) : ORIGIN = 0x08000000, LENGTH = 128K + ram (rwx) : ORIGIN = 0x20000000, LENGTH = 20K +} + +/* Include the common ld script. */ +INCLUDE libopencm3_stm32.ld + -- cgit v1.2.3