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Diffstat (limited to 'src/platforms/native/swdptap.c')
-rw-r--r--src/platforms/native/swdptap.c155
1 files changed, 0 insertions, 155 deletions
diff --git a/src/platforms/native/swdptap.c b/src/platforms/native/swdptap.c
deleted file mode 100644
index dceb23e..0000000
--- a/src/platforms/native/swdptap.c
+++ /dev/null
@@ -1,155 +0,0 @@
-/*
- * This file is part of the Black Magic Debug project.
- *
- * Copyright (C) 2011 Black Sphere Technologies Ltd.
- * Written by Gareth McMullin <gareth@blacksphere.co.nz>
- *
- * This program is free software: you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation, either version 3 of the License, or
- * (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program. If not, see <http://www.gnu.org/licenses/>.
- */
-
-/* This file implements the low-level SW-DP interface. */
-
-#include <stdio.h>
-
-#include "general.h"
-
-#include "swdptap.h"
-
-#include "gdb_packet.h"
-
-static void swdptap_turnaround(uint8_t dir)
-{
- static uint8_t olddir = 0;
-
- DEBUG("%s", dir ? "\n-> ":"\n<- ");
-
- /* Don't turnaround if direction not changing */
- if(dir == olddir) return;
- olddir = dir;
-
- if(dir)
- gpio_set_mode(SWDIO_PORT, GPIO_MODE_INPUT,
- GPIO_CNF_INPUT_FLOAT, SWDIO_PIN);
- gpio_set(SWCLK_PORT, SWCLK_PIN);
- gpio_clear(SWCLK_PORT, SWCLK_PIN);
- if(!dir)
- gpio_set_mode(SWDIO_PORT, GPIO_MODE_OUTPUT_50_MHZ,
- GPIO_CNF_OUTPUT_PUSHPULL, SWDIO_PIN);
-}
-
-static uint8_t swdptap_bit_in(void)
-{
- uint16_t ret;
-
- ret = gpio_get(SWDIO_PORT, SWDIO_PIN);
- gpio_set(SWCLK_PORT, SWCLK_PIN);
- gpio_clear(SWCLK_PORT, SWCLK_PIN);
-
- DEBUG("%d", ret?1:0);
-
- return ret != 0;
-}
-
-static void swdptap_bit_out(uint8_t val)
-{
- DEBUG("%d", val);
-
- gpio_set_val(SWDIO_PORT, SWDIO_PIN, val);
- gpio_set(SWCLK_PORT, SWCLK_PIN);
- gpio_clear(SWCLK_PORT, SWCLK_PIN);
-}
-
-int swdptap_init(void)
-{
- /* This must be investigated in more detail.
- * As described in STM32 Reference Manual... */
- swdptap_reset();
- swdptap_seq_out(0xE79E, 16); /* 0b0111100111100111 */
- swdptap_reset();
- swdptap_seq_out(0, 16);
-
- return 0;
-}
-
-
-void swdptap_reset(void)
-{
- swdptap_turnaround(0);
- /* 50 clocks with TMS high */
- for(int i = 0; i < 50; i++) swdptap_bit_out(1);
-}
-
-
-uint32_t swdptap_seq_in(int ticks)
-{
- uint32_t index = 1;
- uint32_t ret = 0;
-
- swdptap_turnaround(1);
-
- while(ticks--) {
- if(swdptap_bit_in()) ret |= index;
- index <<= 1;
- }
-
- return ret;
-}
-
-
-uint8_t swdptap_seq_in_parity(uint32_t *ret, int ticks)
-{
- uint32_t index = 1;
- uint8_t parity = 0;
- *ret = 0;
-
- swdptap_turnaround(1);
-
- while(ticks--) {
- if(swdptap_bit_in()) {
- *ret |= index;
- parity ^= 1;
- }
- index <<= 1;
- }
- if(swdptap_bit_in()) parity ^= 1;
-
- return parity;
-}
-
-
-void swdptap_seq_out(uint32_t MS, int ticks)
-{
- swdptap_turnaround(0);
-
- while(ticks--) {
- swdptap_bit_out(MS & 1);
- MS >>= 1;
- }
-}
-
-
-void swdptap_seq_out_parity(uint32_t MS, int ticks)
-{
- uint8_t parity = 0;
-
- swdptap_turnaround(0);
-
- while(ticks--) {
- swdptap_bit_out(MS & 1);
- parity ^= MS;
- MS >>= 1;
- }
- swdptap_bit_out(parity & 1);
-}
-