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-rw-r--r--examples/stm32-h103/spi/spi.c65
1 files changed, 65 insertions, 0 deletions
diff --git a/examples/stm32-h103/spi/spi.c b/examples/stm32-h103/spi/spi.c
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index 0000000..86bd2a9
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+++ b/examples/stm32-h103/spi/spi.c
@@ -0,0 +1,65 @@
+/*
+ * This file is part of the libopenstm32 project.
+ *
+ * Copyright (C) 2010 Uwe Hermann <uwe@hermann-uwe.de>
+ *
+ * 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 <http://www.gnu.org/licenses/>.
+ */
+
+#include <libopenstm32.h>
+
+void clock_setup(void)
+{
+ /* Select HSI as SYSCLK source. */
+ rcc_set_sysclk_source(SW_SYSCLKSEL_HSICLK);
+
+ /* Set the PLL multiplication factor to 9. */
+ rcc_set_pll_multiplication_factor(PLLMUL_PLL_CLK_MUL9);
+
+ /* Select HSI/2 as PLL source. */
+ rcc_set_pll_source(PLLSRC_HSI_CLK_DIV2);
+
+ rcc_set_pllxtpre(PLLXTPRE_HSE_CLK_DIV2);
+
+ /* Enable PLL oscillator and wait for it to stabilize. */
+ rcc_osc_on(PLL);
+ rcc_wait_for_osc_ready(PLL);
+
+ /* Select PLL as SYSCLK source. */
+ rcc_set_sysclk_source(SW_SYSCLKSEL_PLLCLK);
+}
+
+void spi_setup(void)
+{
+ /* TODO */
+}
+
+void gpio_setup(void)
+{
+ /* TODO */
+}
+
+int main(void)
+{
+ clock_setup();
+ gpio_setup();
+ spi_setup();
+
+ while (1) {
+ spi_write(SPI1, 0xaa);
+ spi_write(SPI1, 0x55);
+ }
+
+ return 0;
+}