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-rw-r--r--examples/stm32/l1/stm32l-discovery/miniblink/Makefile25
-rw-r--r--examples/stm32/l1/stm32l-discovery/miniblink/README9
-rw-r--r--examples/stm32/l1/stm32l-discovery/miniblink/miniblink.c72
3 files changed, 106 insertions, 0 deletions
diff --git a/examples/stm32/l1/stm32l-discovery/miniblink/Makefile b/examples/stm32/l1/stm32l-discovery/miniblink/Makefile
new file mode 100644
index 0000000..8c88be0
--- /dev/null
+++ b/examples/stm32/l1/stm32l-discovery/miniblink/Makefile
@@ -0,0 +1,25 @@
+##
+## This file is part of the libopencm3 project.
+##
+## Copyright (C) 2009 Uwe Hermann <uwe@hermann-uwe.de>
+##
+## 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 <http://www.gnu.org/licenses/>.
+##
+
+BINARY = miniblink
+
+LDSCRIPT = ../stm32l15xxB.ld
+
+include ../../Makefile.include
+
diff --git a/examples/stm32/l1/stm32l-discovery/miniblink/README b/examples/stm32/l1/stm32l-discovery/miniblink/README
new file mode 100644
index 0000000..8bdd314
--- /dev/null
+++ b/examples/stm32/l1/stm32l-discovery/miniblink/README
@@ -0,0 +1,9 @@
+------------------------------------------------------------------------------
+README
+------------------------------------------------------------------------------
+
+This is the smallest-possible example program using libopencm3.
+
+It's intended for the ST STM32L-DISCOVERY eval board. It should blink
+the blue LED on the board.
+
diff --git a/examples/stm32/l1/stm32l-discovery/miniblink/miniblink.c b/examples/stm32/l1/stm32l-discovery/miniblink/miniblink.c
new file mode 100644
index 0000000..a9d7c3d
--- /dev/null
+++ b/examples/stm32/l1/stm32l-discovery/miniblink/miniblink.c
@@ -0,0 +1,72 @@
+/*
+ * This file is part of the libopencm3 project.
+ *
+ * Copyright (C) 2009 Uwe Hermann <uwe@hermann-uwe.de>
+ * Copyright (C) 2011 Stephen Caudle <scaudle@doceme.com>
+ * Copyright (C) 2012 Karl Palsson <karlp@tweak.net.au>
+ *
+ * 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 <http://www.gnu.org/licenses/>.
+ */
+
+#include <libopencm3/stm32/l1/rcc.h>
+#include <libopencm3/stm32/l1/gpio.h>
+
+#define PORT_LED GPIOB
+#define PIN_LED GPIO6
+
+void gpio_setup(void)
+{
+ /* Enable GPIOB clock. */
+ /* Manually: */
+ RCC_AHBENR |= RCC_AHBENR_IOPBEN;
+ /* Using API functions: */
+ //rcc_peripheral_enable_clock(&RCC_AHBENR, RCC_AHBENR_IOPBEN);
+
+ /* Set GPIO6 (in GPIO port B) to 'output push-pull'. */
+ /* Using API functions: */
+ gpio_mode_setup(PORT_LED, GPIO_MODE_OUTPUT, GPIO_PUPD_NONE, PIN_LED);
+}
+
+int main(void)
+{
+ int i;
+
+ gpio_setup();
+
+ /* Blink the LED (PC8) on the board. */
+ while (1) {
+ /* Manually: */
+ // GPIOD_BSRR = GPIO12; /* LED off */
+ // for (i = 0; i < 1000000; i++) /* Wait a bit. */
+ // __asm__("nop");
+ // GPIOD_BRR = GPIO12; /* LED on */
+ // for (i = 0; i < 1000000; i++) /* Wait a bit. */
+ // __asm__("nop");
+
+ /* Using API functions gpio_set()/gpio_clear(): */
+ // gpio_set(GPIOD, GPIO12); /* LED off */
+ // for (i = 0; i < 1000000; i++) /* Wait a bit. */
+ // __asm__("nop");
+ // gpio_clear(GPIOD, GPIO12); /* LED on */
+ // for (i = 0; i < 1000000; i++) /* Wait a bit. */
+ // __asm__("nop");
+
+ /* Using API function gpio_toggle(): */
+ gpio_toggle(PORT_LED, PORT_LED); /* LED on/off */
+ for (i = 0; i < 1000000; i++) /* Wait a bit. */
+ __asm__("nop");
+ }
+
+ return 0;
+}