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atsamd: Initial support for SAMD51

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Signed-off-by: Kevin O'Connor <kevin@koconnor.net>
This commit is contained in:
Kevin O'Connor
2019-01-14 18:21:50 -05:00
parent f6ce875818
commit 8cd83b4c2d
17 changed files with 434 additions and 61 deletions
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7
src/atsamd/spi.c
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@@ -1,13 +1,12 @@
// spi support on samd21
// spi support on samd
//
// Copyright (C) 2018 Kevin O'Connor <kevin@koconnor.net>
// Copyright (C) 2018-2019 Kevin O'Connor <kevin@koconnor.net>
//
// This file may be distributed under the terms of the GNU GPLv3 license.
#include "internal.h" // enable_pclock
#include "command.h" // shutdown
#include "gpio.h" // spi_setup
#include "samd21.h" // SERCOM4
#include "sched.h" // sched_shutdown
static void
@@ -41,7 +40,7 @@ spi_setup(uint32_t bus, uint8_t mode, uint32_t rate)
if (bus)
shutdown("Invalid spi bus");
uint32_t ctrla = (SERCOM_SPI_CTRLA_MODE_SPI_MASTER
uint32_t ctrla = (SERCOM_SPI_CTRLA_MODE(3)
| (mode << SERCOM_SPI_CTRLA_CPHA_Pos)
| SERCOM_SPI_CTRLA_DIPO(0)
| SERCOM_SPI_CTRLA_DOPO(1)