23 lines
710 B
C
23 lines
710 B
C
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// Commands for sending messages on an SPI bus
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//
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// Copyright (C) 2016 Kevin O'Connor <kevin@koconnor.net>
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//
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// This file may be distributed under the terms of the GNU GPLv3 license.
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#include "board/gpio.h" // gpio_out_write
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#include "command.h" // DECL_COMMAND
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void
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command_send_spi_message(uint32_t *args)
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{
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// For now, this only implements enough to program an ad5206 digipot
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uint8_t len = args[1];
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char *msg = (void*)(size_t)args[2];
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spi_config();
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struct gpio_out pin = gpio_out_setup(args[0], 0);
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spi_transfer(msg, len);
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gpio_out_write(pin, 1);
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sendf("spi_response response=%*s", len, msg);
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}
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DECL_COMMAND(command_send_spi_message, "send_spi_message pin=%u msg=%*s");
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