39 lines
1.3 KiB
Markdown
39 lines
1.3 KiB
Markdown
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---
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title: "controller.h"
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summary: "Communicates with the PS/2 controller chip"
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---
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**Warning:** This whole code needs to be reworked!
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# `PS2_CONTROLLER_DATA_PORT` - macro
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The data transmission IO port.
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# `PS2_CONTROLLER_STATUS_PORT` - macro
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The Status register IO port.
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# `PS2_CONTROLLER_COMMAND_PORT` - macro
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The command transmission IO port.
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# `PS2_CONTROLLER_TIMEOUT` - macro
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The amount of cycles the system waits for the controller before cancelling an operation.
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# `ps2_controller_init()` - function (void)
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Initializes the PS/2 controller and devices.
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At the moment it trusts very much stuff blindly.
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This needs to be changed.
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The osdev wiki has a list of stuff to do while initializing PS/2.
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# `ps2_controller_command(command)` - function (uint8_t)
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Sends the PS/2 controller a command.
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# `ps2_controller_command_with_data(command, data)` - function (uint8_t)
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Sends the PS/2 controller a command that needs additional data on the data port.
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# `ps2_controller_wait_until_ready_for_input()` - function (bool)
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Halts until the status register says that there can be data read, or the timeout is reached.
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# `ps2_controller_wait_until_ready_for_output()` - function (bool)
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Halts until the status register says that there can be data written, or the timeout is reached.
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# `ps2_controller_read_data()` - function (uint8_t)
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Reads data from the PS/2 controller.
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