add spi, not tested yet

F3:F303/CANbus4BTA/spi.h

@@ -0,0 +1,37 @@
+/*
+ * This file is part of the canbus4bta project.
+ * Copyright 2024 Edward V. Emelianov <edward.emelianoff@gmail.com>.
+ *
+ * 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/>.
+ */
+
+#pragma once
+#include <stm32f3.h>
+
+#define AMOUNT_OF_SPI   (2)
+
+typedef enum{
+    SPI_NOTREADY,
+    SPI_READY,
+    SPI_BUSY
+} spiStatus;
+
+extern spiStatus spi_status[AMOUNT_OF_SPI+1];
+
+void spi_setup(uint8_t idx);
+int spi_waitbsy(uint8_t idx);
+int spi_writeread(uint8_t idx, uint8_t *data, uint32_t n);
+//int spi_write_dma(const uint8_t *data, uint8_t *rxbuf, uint32_t n);
+//int spi_read(uint8_t idx, uint8_t *data, uint32_t n);
+//uint8_t *spi_read_dma(uint32_t *n);