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Masked lower byte when writing to DLL.

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This commit is contained in:
Jacob Pease 2024-07-24 22:44:27 -05:00
parent 286d80de7e
commit d15be492cb
1 changed files with 1 additions and 1 deletions
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fpga/zsbl/uart.c
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@ -35,7 +35,7 @@ void init_uart(uint32_t freq, uint32_t baud)
write_reg_u8(UART_IER, 0x00); // Disable all interrupts
write_reg_u8(UART_LCR, 0x80); // Enable DLAB (set baud rate divisor)
write_reg_u8(UART_DLL, divisor); // divisor (lo byte)
write_reg_u8(UART_DLL, divisor & 0xFF); // divisor (lo byte)
write_reg_u8(UART_DLM, (divisor >> 8) & 0xFF); // divisor (hi byte)
write_reg_u8(UART_LCR, 0x03); // 8 bits, no parity, one stop bit
write_reg_u8(UART_FCR, 0xC7); // Enable FIFO, clear them, with 14-byte threshold