- ser_putchar(MCP41_WRITE_DATA, spi_ser);
- ser_putchar(((MCP41_HW_MAX * (uint32_t)res) + (MCP41_MAX / 2)) / MCP41_MAX, spi_ser);
- ser_drain(spi_ser);
+ kfile_putc(MCP41_WRITE_DATA, ch);
+ kfile_putc(((MCP41_HW_MAX * (uint32_t)res) + (MCP41_MAX / 2)) / MCP41_MAX, ch);
+ kfile_flush(ch);