UART_RXD : in std_logic - serial receive dataĭIN : in std_logic_vector(7 downto 0) - input data to be transmitted over UARTĭIN_VLD : in std_logic - when DIN_VLD = 1, input data (DIN) are validĭIN_RDY : out std_logic - when DIN_RDY = 1, transmitter is ready and valid input data will be accepted for transmitingĭOUT : out std_logic_vector(7 downto 0) - output data received via UARTĭOUT_VLD : out std_logic - when DOUT_VLD = 1, output data (DOUT) are valid (is assert only for one clock cycle)įRAME_ERROR : out std_logic - when FRAME_ERROR = 1, stop bit was invalid (is assert only for one clock cycle) UART_TXD : out std_logic - serial transmit data RST : in std_logic - high active synchronous reset There are a lot of jumpers and they need to be in the right position when using certain peripherals on the board.Ī nice example is the use of PIO1.1 and PIO1.0: these are by default jumpered to the rotary switch and this switch may pull the IO lines low in certain positions so you might see strange effect when using those pins and not removing the jumpers. I suggest to study both the schematics for the base board and the user manual whenever you want to use any peripherals on the board. This will disable the ISP option and makes your USB-Uart bridge with any terminal program you like to use. If you do not use ISP (and who does when we have the LPC-Link available) I suggest removing these jumpers. If Terraterm sets these RS232 signals at a certain level, your lpc microcontroller will either stay in reser or go to bootloader mode. If these jumpers are inserted, the RTS and DTS signals control the reset and P0.1 (bootloader enable) pins. There you will find (chapter 4.1.1.1) a discription of the jumper for jumpers J54. I suggest reading section 4 of the user manual that comes with the base board. Content originally posted in LPCWare by Rob65 on Mon May 09 01:36:
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