[4407ee6] | 1 | /** |
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| 2 | * @file printk-support.c |
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| 3 | * |
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| 4 | * @ingroup tms570 |
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| 5 | * |
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| 6 | * @brief definitions of serial line for debugging. |
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| 7 | */ |
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| 8 | |
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| 9 | /* |
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| 10 | * Copyright (c) 2014 Premysl Houdek <kom541000@gmail.com> |
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| 11 | * |
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| 12 | * Google Summer of Code 2014 at |
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| 13 | * Czech Technical University in Prague |
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| 14 | * Zikova 1903/4 |
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| 15 | * 166 36 Praha 6 |
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| 16 | * Czech Republic |
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| 17 | * |
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| 18 | * Based on LPC24xx and LPC1768 BSP |
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| 19 | * by embedded brains GmbH and others |
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| 20 | * |
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| 21 | * The license and distribution terms for this file may be |
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| 22 | * found in the file LICENSE in this distribution or at |
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| 23 | * http://www.rtems.org/license/LICENSE. |
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| 24 | */ |
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| 25 | |
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| 26 | #include <rtems/bspIo.h> |
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| 27 | #include <stdint.h> |
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| 28 | #include <bsp/tms570-sci.h> |
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| 29 | #include <bsp/tms570-sci-driver.h> |
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| 30 | |
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| 31 | |
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| 32 | /** |
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| 33 | * @brief Puts chars into peripheral |
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| 34 | * |
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| 35 | * debug functions always use serial dev 0 peripheral |
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| 36 | * |
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| 37 | * @retval Void |
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| 38 | */ |
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| 39 | static void tms570_putc(char ch) |
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| 40 | { |
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| 41 | rtems_interrupt_level level; |
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| 42 | |
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| 43 | rtems_interrupt_disable(level); |
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[b2c252b] | 44 | while ( ( driver_context_table[0].regs->FLR & TMS570_SCI_FLR_TXRDY ) == 0) { |
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[4407ee6] | 45 | rtems_interrupt_flash(level); |
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| 46 | } |
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[069560a] | 47 | driver_context_table[0].regs->TD = ch; |
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[4407ee6] | 48 | rtems_interrupt_enable(level); |
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| 49 | } |
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| 50 | |
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| 51 | /** |
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| 52 | * @brief debug console output |
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| 53 | * |
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| 54 | * debug functions always use serial dev 0 peripheral |
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| 55 | * |
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| 56 | * @retval Void |
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| 57 | */ |
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| 58 | static void tms570_uart_output(char c) |
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| 59 | { |
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| 60 | if ( c == '\n' ) { |
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| 61 | char r = '\r'; |
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| 62 | tms570_putc(r); |
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| 63 | } |
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| 64 | tms570_putc(c); |
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| 65 | } |
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| 66 | |
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| 67 | /** |
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| 68 | * @brief debug console input |
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| 69 | * |
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| 70 | * debug functions always use serial dev 0 peripheral |
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| 71 | * |
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| 72 | * @retval x Read char |
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| 73 | * @retval -1 No input character available |
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| 74 | */ |
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| 75 | static int tms570_uart_input( void ) |
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| 76 | { |
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[b2c252b] | 77 | if ( driver_context_table[0].regs->FLR & TMS570_SCI_FLR_RXRDY ) { |
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[069560a] | 78 | return driver_context_table[0].regs->RD; |
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[4407ee6] | 79 | } else { |
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| 80 | return -1; |
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| 81 | } |
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| 82 | } |
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| 83 | |
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| 84 | BSP_output_char_function_type BSP_output_char = tms570_uart_output; |
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| 85 | BSP_polling_getchar_function_type BSP_poll_char = tms570_uart_input; |
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