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Fix I2C thanks to Mark!

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This commit is contained in:
Scott Shawcroft 2020-05-29 16:32:31 -07:00
parent d0401f02a9
commit ae52d052cb
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GPG Key ID: 9349BC7E64B1921E
1 changed files with 4 additions and 1 deletions
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5
ports/esp32s2/common-hal/busio/I2C.c
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@ -218,7 +218,10 @@ uint8_t common_hal_busio_i2c_read(busio_i2c_obj_t *self, uint16_t addr,
i2c_cmd_handle_t cmd = i2c_cmd_link_create();
i2c_master_start(cmd);
i2c_master_write_byte(cmd, addr << 1 | 1, true); // | 1 to indicate read
i2c_master_read(cmd, data, len, true);
if (len > 1) {
i2c_master_read(cmd, data, len - 1, 0);
}
i2c_master_read_byte(cmd, data + len - 1, 1);
i2c_master_stop(cmd);
esp_err_t result = i2c_master_cmd_begin(self->i2c_num, cmd, 100 /* wait in ticks */);
i2c_cmd_link_delete(cmd);