Add SPI master for ChibiOS/ARM. (#8779)

1 files changed, 78 insertions, 0 deletions

diff --git a/drivers/chibios/spi_master.h b/drivers/chibios/spi_master.h
new file mode 100644
index 000000000..0c18587c9
--- /dev/null
+++ b/drivers/chibios/spi_master.h
@@ -0,0 +1,78 @@
+/* Copyright 2020 Nick Brassel (tzarc)
+ *
+ *  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 <https://www.gnu.org/licenses/>.
+ */
+
+#pragma once
+
+#include <ch.h>
+#include <hal.h>
+#include <quantum.h>
+
+#ifndef SPI_DRIVER
+#    define SPI_DRIVER SPID2
+#endif
+
+#ifndef SPI_SCK_PIN
+#    define SPI_SCK_PIN B13
+#endif
+
+#ifndef SPI_SCK_PAL_MODE
+#    define SPI_SCK_PAL_MODE 5
+#endif
+
+#ifndef SPI_MOSI_PIN
+#    define SPI_MOSI_PIN B15
+#endif
+
+#ifndef SPI_MOSI_PAL_MODE
+#    define SPI_MOSI_PAL_MODE 5
+#endif
+
+#ifndef SPI_MISO_PIN
+#    define SPI_MISO_PIN B14
+#endif
+
+#ifndef SPI_MISO_PAL_MODE
+#    define SPI_MISO_PAL_MODE 5
+#endif
+
+typedef int16_t spi_status_t;
+
+#define SPI_STATUS_SUCCESS (0)
+#define SPI_STATUS_ERROR (-1)
+#define SPI_STATUS_TIMEOUT (-2)
+
+#define SPI_TIMEOUT_IMMEDIATE (0)
+#define SPI_TIMEOUT_INFINITE (0xFFFF)
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+void spi_init(void);
+
+bool spi_start(pin_t slavePin, bool lsbFirst, uint8_t mode, uint16_t divisor);
+
+spi_status_t spi_write(uint8_t data);
+
+spi_status_t spi_read(void);
+
+spi_status_t spi_transmit(const uint8_t *data, uint16_t length);
+
+spi_status_t spi_receive(uint8_t *data, uint16_t length);
+
+void spi_stop(void);
+#ifdef __cplusplus
+}
+#endif