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Diffstat (limited to 'peripheral/libmraa/examples/spi_max7219.c')
-rw-r--r-- | peripheral/libmraa/examples/spi_max7219.c | 88 |
1 files changed, 0 insertions, 88 deletions
diff --git a/peripheral/libmraa/examples/spi_max7219.c b/peripheral/libmraa/examples/spi_max7219.c deleted file mode 100644 index 4c1ad06..0000000 --- a/peripheral/libmraa/examples/spi_max7219.c +++ /dev/null @@ -1,88 +0,0 @@ -/* - * Author: Michael Ring <mail@michael-ring.org> - * Author: Thomas Ingleby <thomas.c.ingleby@intel.com> - * Copyright (c) 2014 Intel Corporation. - * - * Permission is hereby granted, free of charge, to any person obtaining - * a copy of this software and associated documentation files (the - * "Software"), to deal in the Software without restriction, including - * without limitation the rights to use, copy, modify, merge, publish, - * distribute, sublicense, and/or sell copies of the Software, and to - * permit persons to whom the Software is furnished to do so, subject to - * the following conditions: - * - * The above copyright notice and this permission notice shall be - * included in all copies or substantial portions of the Software. - * - * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, - * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF - * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND - * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE - * LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION - * OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION - * WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. - */ - -#include "mraa.h" -#include <unistd.h> -#include <stdint.h> - -int -main(int argc, char** argv) -{ - //! [Interesting] - mraa_spi_context spi; - spi = mraa_spi_init(1); - if (spi == NULL) { - printf("Initialization of spi failed, check syslog for details, exit...\n"); - exit(1); - } - - printf("SPI initialised successfully\n"); - - mraa_spi_frequency(spi, 400000); - mraa_spi_lsbmode(spi, 0); - - // The MAX7219/21 Chip needs the data in word size - if (mraa_spi_bit_per_word(spi, 16) != MRAA_SUCCESS) { - printf("Could not set SPI Device to 16Bit mode, exit...\n"); - exit(1); - }; - - mraa_spi_write_word(spi, 0x0900); // Do not decode bits - mraa_spi_write_word(spi, 0x0a05); // Brightness of LEDs - mraa_spi_write_word(spi, 0x0b07); // Show all Scan Lines - mraa_spi_write_word(spi, 0x0c01); // Display on - mraa_spi_write_word(spi, 0x0f00); // Testmode off - - // Display Pattern on the display - uint16_t dataAA55[] = { 0x01aa, 0x0255, 0x03aa, 0x0455, 0x05aa, 0x0655, 0x07aa, 0x0855 }; - mraa_spi_write_buf_word(spi, dataAA55, 16); - - sleep(2); - - // Display inverted Pattern - uint16_t data55AA[] = { 0x0155, 0x02aa, 0x0355, 0x04aa, 0x0555, 0x06aa, 0x0755, 0x08aa }; - mraa_spi_write_buf_word(spi, data55AA, 16); - - sleep(2); - - // Clear the display - uint16_t data[] = { 0x0100, 0x0200, 0x0300, 0x0400, 0x0500, 0x0600, 0x0700, 0x0800 }; - mraa_spi_write_buf_word(spi, data, 16); - - int i; - int j; - // cycle through all LED's - for (i = 1; i <= 8; i++) { - for (j = 0; j < 8; j++) { - mraa_spi_write_word(spi, (i << 8) + (1 << j)); - sleep(1); - } - mraa_spi_write_word(spi, i << 8); - } - - mraa_spi_stop(spi); - - //! [Interesting] -} |