From 580d25a84baaa160b0afdc096e9aa1e8ca1c2d2b Mon Sep 17 00:00:00 2001 From: Stephen Caudle Date: Mon, 31 Oct 2011 00:16:37 -0400 Subject: Move STM32 example projects in family specific folders --- .../stm32f1/stm32-h103/usart_irq_printf/Makefile | 23 -- .../stm32-h103/usart_irq_printf/usart_irq_printf.c | 272 --------------------- .../usart_irq_printf/usart_irq_printf.ld | 31 --- 3 files changed, 326 deletions(-) delete mode 100644 examples/stm32f1/stm32-h103/usart_irq_printf/Makefile delete mode 100644 examples/stm32f1/stm32-h103/usart_irq_printf/usart_irq_printf.c delete mode 100644 examples/stm32f1/stm32-h103/usart_irq_printf/usart_irq_printf.ld (limited to 'examples/stm32f1/stm32-h103/usart_irq_printf') diff --git a/examples/stm32f1/stm32-h103/usart_irq_printf/Makefile b/examples/stm32f1/stm32-h103/usart_irq_printf/Makefile deleted file mode 100644 index 2917a7d..0000000 --- a/examples/stm32f1/stm32-h103/usart_irq_printf/Makefile +++ /dev/null @@ -1,23 +0,0 @@ -## -## 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_irq_printf - -include ../../Makefile.include - diff --git a/examples/stm32f1/stm32-h103/usart_irq_printf/usart_irq_printf.c b/examples/stm32f1/stm32-h103/usart_irq_printf/usart_irq_printf.c deleted file mode 100644 index deee527..0000000 --- a/examples/stm32f1/stm32-h103/usart_irq_printf/usart_irq_printf.c +++ /dev/null @@ -1,272 +0,0 @@ -/* - * 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 -#include - -/****************************************************************************** - * Simple ringbuffer implementation from open-bldc's libgovernor that - * you can find at: - * https://github.com/open-bldc/open-bldc/tree/master/source/libgovernor - ******************************************************************************/ - -typedef s32 ring_size_t; - -struct ring { - u8 *data; - ring_size_t size; - u32 begin; - u32 end; -}; - -#define RING_SIZE(RING) ((RING)->size - 1) -#define RING_DATA(RING) (RING)->data -#define RING_EMPTY(RING) ((RING)->begin == (RING)->end) - -void ring_init(struct ring *ring, u8 * buf, ring_size_t size) -{ - ring->data = buf; - ring->size = size; - ring->begin = 0; - ring->end = 0; -} - -s32 ring_write_ch(struct ring *ring, u8 ch) -{ - if (((ring->end + 1) % ring->size) != ring->begin) { - ring->data[ring->end++] = ch; - ring->end %= ring->size; - return (u32) ch; - } - - return -1; -} - -s32 ring_write(struct ring * ring, u8 * data, ring_size_t size) -{ - s32 i; - - for (i = 0; i < size; i++) { - if (ring_write_ch(ring, data[i]) < 0) { - return -i; - } - } - - return i; -} - -s32 ring_read_ch(struct ring * ring, u8 * ch) -{ - s32 ret = -1; - - if (ring->begin != ring->end) { - ret = ring->data[ring->begin++]; - ring->begin %= ring->size; - if (ch) - *ch = ret; - } - - return ret; -} - -s32 ring_read(struct ring * ring, u8 * data, ring_size_t size) -{ - s32 i; - - for (i = 0; i < size; i++) { - if (ring_read_ch(ring, data + i) < 0) { - return i; - } - } - - return -i; -} - -/****************************************************************************** - * The example implementation - ******************************************************************************/ - -#define BUFFER_SIZE 1024 - -struct ring output_ring; -u8 output_ring_buffer[BUFFER_SIZE]; - -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) -{ - - /* Initialize output ring buffer */ - ring_init(&output_ring, output_ring_buffer, BUFFER_SIZE); - - /* Enable the USART1 interrupt. */ - nvic_enable_irq(NVIC_USART1_IRQ); - - /* 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 GPIO pin GPIO_USART1_RE_RX on GPIO port B for receive. */ - gpio_set_mode(GPIOA, GPIO_MODE_INPUT, - GPIO_CNF_INPUT_FLOAT, GPIO_USART1_RX); - - /* Setup UART parameters. */ - usart_set_baudrate(USART1, 230400, rcc_ppre2_frequency); - 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_RX); - - /* Enable USART1 Receive interrupt. */ - USART_CR1(USART1) |= USART_CR1_RXNEIE; - - /* 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); -} - -void usart1_isr(void) -{ - /* Check if we were called because of RXNE. */ - if (((USART_CR1(USART1) & USART_CR1_RXNEIE) != 0) && - ((USART_SR(USART1) & USART_SR_RXNE) != 0)) { - - /* Indicate that we got data. */ - gpio_toggle(GPIOC, GPIO12); - - /* Retrieve the data from the peripheral. */ - ring_write_ch(&output_ring, usart_recv(USART1)); - - /* Enable transmit interrupt so it sends back the data. */ - USART_CR1(USART1) |= USART_CR1_TXEIE; - } - - /* Check if we were called because of TXE. */ - if (((USART_CR1(USART1) & USART_CR1_TXEIE) != 0) && - ((USART_SR(USART1) & USART_SR_TXE) != 0)) { - - s32 data; - - data = ring_read_ch(&output_ring, NULL); - - if (data == -1) { - /* Disable the TXE interrupt as we don't need it anymore. */ - USART_CR1(USART1) &= ~USART_CR1_TXEIE; - } else { - /* Put data into the transmit register. */ - usart_send(USART1, data); - } - } -} - -int _write (int file, char *ptr, int len) -{ - int ret; - - if (file == 1) { - ret = ring_write(&output_ring, (u8 *)ptr, len); - - if (ret < 0) ret = -ret; - - USART_CR1(USART1) |= USART_CR1_TXEIE; - - return ret; - } - - errno = EIO; - return -1; -} - -void systick_setup(void) { - - /* 72MHz / 8 => 9000000 counts per second */ - systick_set_clocksource(STK_CTRL_CLKSOURCE_AHB_DIV8); - - /* 9000000/9000 = 1000 overflows per second - every 1ms one interrupt */ - systick_set_reload(9000); - - systick_interrupt_enable(); - - /* Start counting. */ - systick_counter_enable(); - -} - -void sys_tick_handler(void) -{ - static int counter = 0; - static float fcounter = 0.0; - static double dcounter = 0.0; - - static u32 temp32 = 0; - - temp32++; - - /* We call this handler every 1ms so we are sending hello world every 10ms / 100Hz. */ - if (temp32 == 10) { - printf("Hello World! %i %f %f\r\n", counter, fcounter, dcounter); - counter++; - fcounter+=0.01; - dcounter+=0.01; - - temp32 = 0; - } -} - -int main(void) -{ - - clock_setup(); - gpio_setup(); - usart_setup(); - systick_setup(); - - while (1) { - __asm__("nop"); - } - - return 0; -} diff --git a/examples/stm32f1/stm32-h103/usart_irq_printf/usart_irq_printf.ld b/examples/stm32f1/stm32-h103/usart_irq_printf/usart_irq_printf.ld deleted file mode 100644 index edb52c5..0000000 --- a/examples/stm32f1/stm32-h103/usart_irq_printf/usart_irq_printf.ld +++ /dev/null @@ -1,31 +0,0 @@ -/* - * 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_stm32f1.ld - -- cgit v1.2.3