diff options
author | Joel Challis <git@zvecr.com> | 2021-10-22 00:49:38 +0100 |
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committer | GitHub <noreply@github.com> | 2021-10-22 00:49:38 +0100 |
commit | 1b1f3ec68ee1e7abe436a46bcfedf30f21330aef (patch) | |
tree | bbb7e0dd548773b6c1ead6275a4bafc1910c444a /tmk_core/protocol/arm_atsam/spi_master.h | |
parent | 1b93d576f84822d0f4947179ee49f614ba345f12 (diff) |
Split out arm_atsam shift register logic (#14848)
Diffstat (limited to 'tmk_core/protocol/arm_atsam/spi_master.h')
-rw-r--r-- | tmk_core/protocol/arm_atsam/spi_master.h | 48 |
1 files changed, 48 insertions, 0 deletions
diff --git a/tmk_core/protocol/arm_atsam/spi_master.h b/tmk_core/protocol/arm_atsam/spi_master.h new file mode 100644 index 0000000000..26c55128be --- /dev/null +++ b/tmk_core/protocol/arm_atsam/spi_master.h @@ -0,0 +1,48 @@ +/* Copyright 2021 QMK + * + * 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 <stdbool.h> + +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 |