From c2d81fc246c3ce946fbf19c8d33cd9c1286adc2a Mon Sep 17 00:00:00 2001
From: Alexandre Abadie <alexandre.abadie@inria.fr>
Date: Wed, 8 May 2019 11:47:24 +0200
Subject: [PATCH] stm32-common/spi: add customizable gpio modes for spi pins

---
 cpu/stm32_common/periph/spi.c | 22 ++++++++++++++++++++++
 1 file changed, 22 insertions(+)

diff --git a/cpu/stm32_common/periph/spi.c b/cpu/stm32_common/periph/spi.c
index 7f0d7a9e65..a3e873de72 100644
--- a/cpu/stm32_common/periph/spi.c
+++ b/cpu/stm32_common/periph/spi.c
@@ -116,6 +116,28 @@ int spi_init_cs(spi_t bus, spi_cs_t cs)
     return SPI_OK;
 }
 
+#ifdef MODULE_PERIPH_SPI_GPIO_MODE
+int spi_init_with_gpio_mode(spi_t bus, spi_gpio_mode_t mode)
+{
+    assert(bus < SPI_NUMOF);
+
+    int ret = 0;
+
+#ifdef CPU_FAM_STM32F1
+    /* This has no effect on STM32F1 */
+    return ret;
+#else
+    ret += gpio_init(spi_config[bus].mosi_pin, mode.mosi);
+    ret += gpio_init(spi_config[bus].miso_pin, mode.miso);
+    ret += gpio_init(spi_config[bus].sclk_pin, mode.sclk);
+    gpio_init_af(spi_config[bus].mosi_pin, spi_config[bus].af);
+    gpio_init_af(spi_config[bus].miso_pin, spi_config[bus].af);
+    gpio_init_af(spi_config[bus].sclk_pin, spi_config[bus].af);
+    return ret;
+#endif
+}
+#endif
+
 int spi_acquire(spi_t bus, spi_cs_t cs, spi_mode_t mode, spi_clk_t clk)
 {
     /* lock bus */