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Fix write_then_readinto in adafruit_bus_device I2CDevice #4146

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Feb 8, 2021
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Fix write_then_readinto in adafruit_bus_device I2CDevice #4146

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23 changes: 12 additions & 11 deletions shared-bindings/adafruit_bus_device/I2CDevice.c
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Original file line number Diff line number Diff line change
Expand Up @@ -234,23 +234,24 @@ STATIC mp_obj_t adafruit_bus_device_i2cdevice_write_then_readinto(size_t n_args,

mp_obj_t dest[13];
uint8_t num_kws = 2;
uint8_t index = 2;

mp_load_method(self->i2c, MP_QSTR_writeto_then_readfrom, dest);
dest[2] = MP_OBJ_NEW_SMALL_INT(self->device_address);
dest[3] = args[ARG_out_buffer].u_obj;
dest[4] = args[ARG_in_buffer].u_obj;
dest[5] = MP_OBJ_NEW_QSTR(MP_QSTR_out_start);
dest[6] = MP_OBJ_NEW_SMALL_INT(args[ARG_out_start].u_int);
dest[index++] = MP_OBJ_NEW_SMALL_INT(self->device_address);
dest[index++] = args[ARG_out_buffer].u_obj;
dest[index++] = args[ARG_in_buffer].u_obj;
dest[index++] = MP_OBJ_NEW_QSTR(MP_QSTR_out_start);
dest[index++] = MP_OBJ_NEW_SMALL_INT(args[ARG_out_start].u_int);
if (args[ARG_out_end].u_int != INT_MAX) {
dest[7] = MP_OBJ_NEW_QSTR(MP_QSTR_out_end);
dest[8] = MP_OBJ_NEW_SMALL_INT(args[ARG_out_end].u_int);
dest[index++] = MP_OBJ_NEW_QSTR(MP_QSTR_out_end);
dest[index++] = MP_OBJ_NEW_SMALL_INT(args[ARG_out_end].u_int);
num_kws++;
}
dest[9] = MP_OBJ_NEW_QSTR(MP_QSTR_in_start);
dest[10] = MP_OBJ_NEW_SMALL_INT(args[ARG_in_start].u_int);
dest[index++] = MP_OBJ_NEW_QSTR(MP_QSTR_in_start);
dest[index++] = MP_OBJ_NEW_SMALL_INT(args[ARG_in_start].u_int);
if (args[ARG_in_end].u_int != INT_MAX) {
dest[11] = MP_OBJ_NEW_QSTR(MP_QSTR_in_end);
dest[12] = MP_OBJ_NEW_SMALL_INT(args[ARG_in_end].u_int);
dest[index++] = MP_OBJ_NEW_QSTR(MP_QSTR_in_end);
dest[index++] = MP_OBJ_NEW_SMALL_INT(args[ARG_in_end].u_int);
num_kws++;
}

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