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Diffstat (limited to 'libopencm3/lib/stm32/desig.c')
| -rw-r--r-- | libopencm3/lib/stm32/desig.c | 54 |
1 files changed, 54 insertions, 0 deletions
diff --git a/libopencm3/lib/stm32/desig.c b/libopencm3/lib/stm32/desig.c new file mode 100644 index 0000000..b610e66 --- /dev/null +++ b/libopencm3/lib/stm32/desig.c @@ -0,0 +1,54 @@ +/* + * This file is part of the libopencm3 project. + * + * Copyright (C) 2012 Karl Palsson <karlp@ŧweak.net.au> + * + * This library is free software: you can redistribute it and/or modify + * it under the terms of the GNU Lesser General Public License as published by + * the Free Software Foundation, either version 3 of the License, or + * (at your option) any later version. + * + * This library 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 Lesser General Public License for more details. + * + * You should have received a copy of the GNU Lesser General Public License + * along with this library. If not, see <http://www.gnu.org/licenses/>. + */ + +#include <libopencm3/stm32/desig.h> + +uint16_t desig_get_flash_size(void) +{ + return DESIG_FLASH_SIZE; +} + +void desig_get_unique_id(uint32_t result[]) +{ + result[0] = DESIG_UNIQUE_ID2; + result[1] = DESIG_UNIQUE_ID1; + result[2] = DESIG_UNIQUE_ID0; +} + +void desig_get_unique_id_as_string(char *string, + unsigned int string_len) +{ + int i, len; + uint8_t device_id[12]; + static const char chars[] = "0123456789ABCDEF"; + + desig_get_unique_id((uint32_t *)device_id); + + /* Each byte produces two characters */ + len = (2 * sizeof(device_id) < string_len) ? + 2 * sizeof(device_id) : string_len - 1; + + for (i = 0; i < len; i += 2) { + string[i] = chars[(device_id[i / 2] >> 0) & 0x0F]; + string[i + 1] = chars[(device_id[i / 2] >> 4) & 0x0F]; + } + + string[len] = '\0'; +} + |