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i2c_software: pass pulse ticks from host

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Signed-off-by: Timofey Titovets <nefelim4ag@gmail.com>
This commit is contained in:
Timofey Titovets
2025-04-09 00:35:00 +02:00
committed by KevinOConnor
parent 841adcfff7
commit a9b04e8536
2 changed files with 17 additions and 12 deletions
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17
src/i2c_software.c
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@@ -22,28 +22,21 @@ struct i2c_software {
};
void
command_i2c_set_software_bus(uint32_t *args)
command_i2c_set_sw_bus(uint32_t *args)
{
struct i2cdev_s *i2c = i2cdev_oid_lookup(args[0]);
struct i2c_software *is = alloc_chunk(sizeof(*is));
uint32_t rate = args[3];
is->ticks = CONFIG_CLOCK_FREQ / (100000 * 2); // 100KHz
is->ticks = args[3];
is->addr = (args[4] & 0x7f) << 1; // address format shifted
is->scl_in = gpio_in_setup(args[1], 1);
is->scl_out = gpio_out_setup(args[1], 1);
is->sda_in = gpio_in_setup(args[2], 1);
is->sda_out = gpio_out_setup(args[2], 1);
while (rate > 100000) {
rate = rate >> 1;
if (rate < 100000)
break;
is->ticks = is->ticks >> 1;
}
i2cdev_set_software_bus(i2c, is);
}
DECL_COMMAND(command_i2c_set_software_bus,
"i2c_set_software_bus oid=%c scl_pin=%u sda_pin=%u"
" rate=%u address=%u");
DECL_COMMAND(command_i2c_set_sw_bus,
"i2c_set_sw_bus oid=%c scl_pin=%u sda_pin=%u"
" pulse_ticks=%u address=%u");
// The AVR micro-controllers require specialized timing
#if CONFIG_MACH_AVR