From f1bb59e19c14003a774ae63575e756b2a93e172f Mon Sep 17 00:00:00 2001 From: Joshua Harlan Lifton Date: Wed, 4 Sep 2013 14:00:30 -0700 Subject: [PATCH] First working example for the WaveShare Open103R eval board --- .../f1/waveshare-open103r/miniblink/Makefile | 26 +++++++ .../f1/waveshare-open103r/miniblink/README | 9 +++ .../waveshare-open103r/miniblink/miniblink.c | 72 +++++++++++++++++++ .../waveshare-open103r/waveshare-open103r.ld | 32 +++++++++ 4 files changed, 139 insertions(+) create mode 100644 examples/stm32/f1/waveshare-open103r/miniblink/Makefile create mode 100644 examples/stm32/f1/waveshare-open103r/miniblink/README create mode 100644 examples/stm32/f1/waveshare-open103r/miniblink/miniblink.c create mode 100644 examples/stm32/f1/waveshare-open103r/waveshare-open103r.ld diff --git a/examples/stm32/f1/waveshare-open103r/miniblink/Makefile b/examples/stm32/f1/waveshare-open103r/miniblink/Makefile new file mode 100644 index 0000000..13928eb --- /dev/null +++ b/examples/stm32/f1/waveshare-open103r/miniblink/Makefile @@ -0,0 +1,26 @@ +## +## This file is part of the libopencm3 project. +## +## Copyright (C) 2009 Uwe Hermann +## Copyright (C) 2013 Joshua Harlan Lifton +## +## 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 = miniblink + +LDSCRIPT = ../waveshare-open103r.ld + +include ../../Makefile.include + diff --git a/examples/stm32/f1/waveshare-open103r/miniblink/README b/examples/stm32/f1/waveshare-open103r/miniblink/README new file mode 100644 index 0000000..5e81bcd --- /dev/null +++ b/examples/stm32/f1/waveshare-open103r/miniblink/README @@ -0,0 +1,9 @@ +------------------------------------------------------------------------------ +README +------------------------------------------------------------------------------ + +This is the smallest-possible example program using libopencm3. + +It's intended for the WaveShare Open103R eval board. It should blink +the red LED labeled LED1 on the board. + diff --git a/examples/stm32/f1/waveshare-open103r/miniblink/miniblink.c b/examples/stm32/f1/waveshare-open103r/miniblink/miniblink.c new file mode 100644 index 0000000..b14e35a --- /dev/null +++ b/examples/stm32/f1/waveshare-open103r/miniblink/miniblink.c @@ -0,0 +1,72 @@ +/* + * This file is part of the libopencm3 project. + * + * Copyright (C) 2009 Uwe Hermann + * Copyright (C) 2013 Joshua Harlan Lifton + * + * 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 + +static void gpio_setup(void) +{ + /* Enable GPIOC clock. */ + /* Manually: */ + // RCC_APB2ENR |= RCC_APB2ENR_IOPCEN; + /* Using API functions: */ + rcc_peripheral_enable_clock(&RCC_APB2ENR, RCC_APB2ENR_IOPCEN); + + /* Set GPIO9 (in GPIO port C) to 'output push-pull'. */ + /* Manually: */ + // GPIOC_CRH = (GPIO_CNF_OUTPUT_PUSHPULL << (((9 - 8) * 4) + 2)); + // GPIOC_CRH |= (GPIO_MODE_OUTPUT_2_MHZ << ((9 - 8) * 4)); + /* Using API functions: */ + gpio_set_mode(GPIOC, GPIO_MODE_OUTPUT_2_MHZ, + GPIO_CNF_OUTPUT_PUSHPULL, GPIO9); +} + +int main(void) +{ + int i; + + gpio_setup(); + + /* Blink LED1 (PC9) on the board. */ + while (1) { + /* Manually: */ + // GPIOC_BSRR = GPIO9; /* LED off */ + // for (i = 0; i < 800000; i++) /* Wait a bit. */ + // __asm__("nop"); + // GPIOC_BRR = GPIO9; /* LED on */ + // for (i = 0; i < 800000; i++) /* Wait a bit. */ + // __asm__("nop"); + + /* Using API functions gpio_set()/gpio_clear(): */ + // gpio_set(GPIOC, GPIO9); /* LED off */ + // for (i = 0; i < 800000; i++) /* Wait a bit. */ + // __asm__("nop"); + // gpio_clear(GPIOC, GPIO9); /* LED on */ + // for (i = 0; i < 800000; i++) /* Wait a bit. */ + // __asm__("nop"); + + /* Using API function gpio_toggle(): */ + gpio_toggle(GPIOC, GPIO9); /* LED on/off */ + for (i = 0; i < 800000; i++) /* Wait a bit. */ + __asm__("nop"); + } + + return 0; +} diff --git a/examples/stm32/f1/waveshare-open103r/waveshare-open103r.ld b/examples/stm32/f1/waveshare-open103r/waveshare-open103r.ld new file mode 100644 index 0000000..9c9011e --- /dev/null +++ b/examples/stm32/f1/waveshare-open103r/waveshare-open103r.ld @@ -0,0 +1,32 @@ +/* + * This file is part of the libopencm3 project. + * + * Copyright (C) 2009 Uwe Hermann + * Copyright (C) 2013 Joshua Harlan Lifton + * + * 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 . + */ + +/* Linker script for WaveShare Open103R (STM32F103RCT6, 256K flash, 48K RAM). */ + +/* Define memory regions. */ +MEMORY +{ + rom (rx) : ORIGIN = 0x08000000, LENGTH = 256K + ram (rwx) : ORIGIN = 0x20000000, LENGTH = 48K +} + +/* Include the common ld script. */ +INCLUDE libopencm3_stm32f1.ld +