Christina Quast | c0aa769 | 2015-02-25 14:02:01 +0100 | [diff] [blame] | 1 | /* ---------------------------------------------------------------------------- |
| 2 | * ATMEL Microcontroller Software Support |
| 3 | * ---------------------------------------------------------------------------- |
| 4 | * Copyright (c) 2009, Atmel Corporation |
| 5 | * |
| 6 | * All rights reserved. |
| 7 | * |
| 8 | * Redistribution and use in source and binary forms, with or without |
| 9 | * modification, are permitted provided that the following conditions are met: |
| 10 | * |
| 11 | * - Redistributions of source code must retain the above copyright notice, |
| 12 | * this list of conditions and the disclaimer below. |
| 13 | * |
| 14 | * Atmel's name may not be used to endorse or promote products derived from |
| 15 | * this software without specific prior written permission. |
| 16 | * |
| 17 | * DISCLAIMER: THIS SOFTWARE IS PROVIDED BY ATMEL "AS IS" AND ANY EXPRESS OR |
| 18 | * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF |
| 19 | * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT ARE |
| 20 | * DISCLAIMED. IN NO EVENT SHALL ATMEL BE LIABLE FOR ANY DIRECT, INDIRECT, |
| 21 | * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT |
| 22 | * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, |
| 23 | * OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF |
| 24 | * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING |
| 25 | * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, |
| 26 | * EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
| 27 | * ---------------------------------------------------------------------------- |
| 28 | */ |
| 29 | |
| 30 | /*------------------------------------------------------------------------------ |
| 31 | * Headers |
| 32 | *------------------------------------------------------------------------------*/ |
| 33 | |
| 34 | #include "board.h" |
Harald Welte | 1605564 | 2016-03-03 11:02:45 +0100 | [diff] [blame] | 35 | #include "simtrace.h" |
| 36 | #include "ringbuffer.h" |
Harald Welte | 30a53f8 | 2015-11-08 14:29:55 +0100 | [diff] [blame] | 37 | #include "iso7816_fidi.h" |
Christina Quast | c0aa769 | 2015-02-25 14:02:01 +0100 | [diff] [blame] | 38 | |
| 39 | #include <string.h> |
Christina Quast | cb646bc | 2015-05-03 14:21:26 +0200 | [diff] [blame] | 40 | #include <errno.h> |
Christina Quast | c0aa769 | 2015-02-25 14:02:01 +0100 | [diff] [blame] | 41 | |
Christina Quast | 95d6616 | 2015-04-09 22:38:47 +0200 | [diff] [blame] | 42 | volatile uint32_t char_stat; |
Christina Quast | c0aa769 | 2015-02-25 14:02:01 +0100 | [diff] [blame] | 43 | |
Christina Quast | 4db82e0 | 2015-04-11 18:14:41 +0200 | [diff] [blame] | 44 | volatile ringbuf sim_rcv_buf = { {0}, 0, 0 }; |
Christina Quast | 4ba4d22 | 2015-03-02 16:14:09 +0100 | [diff] [blame] | 45 | |
Christina Quast | e4cbfe6 | 2015-04-20 13:07:28 +0200 | [diff] [blame] | 46 | /*----------------------------------------------------------------------------- |
| 47 | * Interrupt routines |
| 48 | *-----------------------------------------------------------------------------*/ |
Harald Welte | 7dd3dfd | 2016-03-03 12:32:04 +0100 | [diff] [blame] | 49 | static void Callback_PhoneRST_ISR(uint8_t * pArg, uint8_t status, |
| 50 | uint32_t transferred, uint32_t remaining) |
Christina Quast | e4cbfe6 | 2015-04-20 13:07:28 +0200 | [diff] [blame] | 51 | { |
Harald Welte | 7dd3dfd | 2016-03-03 12:32:04 +0100 | [diff] [blame] | 52 | printf("rstCB\n\r"); |
| 53 | PIO_EnableIt(&pinPhoneRST); |
Christina Quast | e4cbfe6 | 2015-04-20 13:07:28 +0200 | [diff] [blame] | 54 | } |
Harald Welte | 7dd3dfd | 2016-03-03 12:32:04 +0100 | [diff] [blame] | 55 | |
| 56 | void ISR_PhoneRST(const Pin * pPin) |
Christina Quast | e4cbfe6 | 2015-04-20 13:07:28 +0200 | [diff] [blame] | 57 | { |
Harald Welte | 7dd3dfd | 2016-03-03 12:32:04 +0100 | [diff] [blame] | 58 | int ret; |
| 59 | // FIXME: no printfs in ISRs? |
| 60 | printf("+++ Int!! %x\n\r", pinPhoneRST.pio->PIO_ISR); |
| 61 | if (((pinPhoneRST.pio->PIO_ISR & pinPhoneRST.mask) != 0)) { |
| 62 | if (PIO_Get(&pinPhoneRST) == 0) { |
| 63 | printf(" 0 "); |
| 64 | } else { |
| 65 | printf(" 1 "); |
| 66 | } |
| 67 | } |
Christina Quast | e4cbfe6 | 2015-04-20 13:07:28 +0200 | [diff] [blame] | 68 | |
Harald Welte | 7dd3dfd | 2016-03-03 12:32:04 +0100 | [diff] [blame] | 69 | if ((ret = |
| 70 | USBD_Write(PHONE_INT, "R", 1, |
| 71 | (TransferCallback) & Callback_PhoneRST_ISR, |
| 72 | 0)) != USBD_STATUS_SUCCESS) { |
| 73 | TRACE_ERROR("USB err status: %d (%s)\n", ret, __FUNCTION__); |
| 74 | return; |
| 75 | } |
Christina Quast | e4cbfe6 | 2015-04-20 13:07:28 +0200 | [diff] [blame] | 76 | |
Harald Welte | 7dd3dfd | 2016-03-03 12:32:04 +0100 | [diff] [blame] | 77 | /* Interrupt enabled after ATR is sent to phone */ |
| 78 | PIO_DisableIt(&pinPhoneRST); |
Christina Quast | e4cbfe6 | 2015-04-20 13:07:28 +0200 | [diff] [blame] | 79 | } |
| 80 | |
Christina Quast | 4db82e0 | 2015-04-11 18:14:41 +0200 | [diff] [blame] | 81 | /* |
| 82 | * char_stat is zero if no error occured. |
| 83 | * Otherwise it is filled with the content of the status register. |
Christina Quast | c0aa769 | 2015-02-25 14:02:01 +0100 | [diff] [blame] | 84 | */ |
Harald Welte | 3bafe43 | 2016-03-20 16:43:12 +0100 | [diff] [blame] | 85 | void mode_trace_usart1_irq(void) |
Christina Quast | 4db82e0 | 2015-04-11 18:14:41 +0200 | [diff] [blame] | 86 | { |
Harald Welte | 7dd3dfd | 2016-03-03 12:32:04 +0100 | [diff] [blame] | 87 | uint32_t stat; |
| 88 | char_stat = 0; |
| 89 | // Rcv buf full |
| 90 | /* if((stat & US_CSR_RXBUFF) == US_CSR_RXBUFF) { |
| 91 | TRACE_DEBUG("Rcv buf full"); |
| 92 | USART_DisableIt(USART1, US_IDR_RXBUFF); |
| 93 | } |
Christina Quast | 4db82e0 | 2015-04-11 18:14:41 +0200 | [diff] [blame] | 94 | */ |
Harald Welte | 7dd3dfd | 2016-03-03 12:32:04 +0100 | [diff] [blame] | 95 | uint32_t csr = USART_PHONE->US_CSR; |
Christina Quast | 4ba4d22 | 2015-03-02 16:14:09 +0100 | [diff] [blame] | 96 | |
Harald Welte | 7dd3dfd | 2016-03-03 12:32:04 +0100 | [diff] [blame] | 97 | if (csr & US_CSR_TXRDY) { |
| 98 | /* transmit buffer empty, nothing to transmit */ |
| 99 | } |
| 100 | if (csr & US_CSR_RXRDY) { |
| 101 | stat = (csr & (US_CSR_OVRE | US_CSR_FRAME | |
| 102 | US_CSR_PARE | US_CSR_TIMEOUT | US_CSR_NACK | |
| 103 | (1 << 10))); |
| 104 | uint8_t c = (USART_PHONE->US_RHR) & 0xFF; |
| 105 | // printf(" %x", c); |
Christina Quast | 4ba4d22 | 2015-03-02 16:14:09 +0100 | [diff] [blame] | 106 | |
Harald Welte | 7dd3dfd | 2016-03-03 12:32:04 +0100 | [diff] [blame] | 107 | if (stat == 0) { |
| 108 | /* Fill char into buffer */ |
| 109 | rbuf_write(&sim_rcv_buf, c); |
| 110 | } else { |
| 111 | TRACE_DEBUG("e %x st: %x\n", c, stat); |
| 112 | } /* else: error occured */ |
Christina Quast | c0aa769 | 2015-02-25 14:02:01 +0100 | [diff] [blame] | 113 | |
Harald Welte | 7dd3dfd | 2016-03-03 12:32:04 +0100 | [diff] [blame] | 114 | char_stat = stat; |
| 115 | } |
Christina Quast | 4ba4d22 | 2015-03-02 16:14:09 +0100 | [diff] [blame] | 116 | } |
Christina Quast | cb646bc | 2015-05-03 14:21:26 +0200 | [diff] [blame] | 117 | |
| 118 | /* FIDI update functions */ |
Christina Quast | cb646bc | 2015-05-03 14:21:26 +0200 | [diff] [blame] | 119 | void update_fidi(uint8_t fidi) |
| 120 | { |
| 121 | int rc; |
| 122 | |
Harald Welte | 7dd3dfd | 2016-03-03 12:32:04 +0100 | [diff] [blame] | 123 | uint8_t fi = fidi >> 4; |
| 124 | uint8_t di = fidi & 0xf; |
Christina Quast | cb646bc | 2015-05-03 14:21:26 +0200 | [diff] [blame] | 125 | |
| 126 | rc = compute_fidi_ratio(fi, di); |
| 127 | if (rc > 0 && rc < 0x400) { |
| 128 | TRACE_INFO("computed Fi(%u) Di(%u) ratio: %d", fi, di, rc); |
Harald Welte | 7dd3dfd | 2016-03-03 12:32:04 +0100 | [diff] [blame] | 129 | /* make sure UART uses new F/D ratio */ |
Christina Quast | cb646bc | 2015-05-03 14:21:26 +0200 | [diff] [blame] | 130 | USART_PHONE->US_CR |= US_CR_RXDIS | US_CR_RSTRX; |
| 131 | USART_PHONE->US_FIDI = rc & 0x3ff; |
| 132 | USART_PHONE->US_CR |= US_CR_RXEN | US_CR_STTTO; |
| 133 | } else |
| 134 | TRACE_INFO("computed FiDi ratio %d unsupported", rc); |
| 135 | } |