| Using HAL in Your Libraries |
| =========================== |
| |
| This page describes the recommended way to implement libraries that |
| utilize HAL functionality. |
| |
| An example of the GPIO HAL being used by a driver for a UART bitbanger |
| that programs the start bit, data bits, and stop bit can be seen in |
| `hw/drivers/uart/uart\_bitbang/src/uart\_bitbang.c <https://github.com/apache/incubator-mynewt-core/blob/master/hw/drivers/uart/uart_bitbang/src/uart_bitbang.c>`__ |
| |
| An example of the flash HAL being used by a file sytem can be seen in |
| `fs/nffs/src/nffs\_flash.c <https://github.com/apache/incubator-mynewt-core/blob/master/fs/nffs/src/nffs_flash.c>`__. |
