pinephone-keyboard/i2c-debugger.c
Ondrej Jirman 6a5fe581b9 Implement flashing over I2C and user/stock firmware support
I2C register layout changed a bit to make various operations easier
to implement in FW and for the user.

Flashing/debugging tools now share more code. Firmware is now more
configurable (it's now possible to compile-out various features).

Self-testing for column-shorts is implemented.

Firmware is optimized for low power consumption.
2021-06-28 15:09:47 +02:00

61 lines
1.4 KiB
C

/*
* Pinephone keyboard I2C debugging tool.
*
* Copyright (C) 2021 Ondřej Jirman <megi@xff.cz>
*
* 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/>.
*/
#include "common.c"
#include "firmware/registers.h"
void dump_log(int fd)
{
int ret;
uint8_t addr = REG_DEBUG_LOG;
uint8_t buf[64];
struct i2c_msg msgs[] = {
{ KB_ADDR, 0, 1, &addr }, // set 0xff address
{ KB_ADDR, I2C_M_RD, sizeof(buf), buf },
};
struct i2c_rdwr_ioctl_data msg = {
.msgs = msgs,
.nmsgs = sizeof(msgs) / sizeof(msgs[0])
};
ret = ioctl(fd, I2C_RDWR, &msg);
syscall_error(ret < 0, "I2C_RDWR failed");
int i;
for (i = 0; i < sizeof(buf) && buf[i]; i++);
if (i > 0)
xwrite(1, buf, i);
}
int main(int ac, char* av[])
{
int fd, ret;
fd = pogo_i2c_open();
while (1) {
dump_log(fd);
usleep(10000);
}
return 0;
}