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i2c_software: allow freq adjust

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Signed-off-by: Timofey Titovets <nefelim4ag@gmail.com>
This commit is contained in:
Timofey Titovets 2025-03-25 21:13:58 +01:00 • committed by KevinOConnor
parent abc76ee963
commit 8ab12c86bf
1 changed files with 7 additions and 0 deletions
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7
src/i2c_software.c
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@ -26,12 +26,19 @@ command_i2c_set_software_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->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,