Data transmission method according to inter-integrated circuit protocol and transmission apparatus
A data transmission method according to an I2C protocol and a transmission apparatus includes: a first transmission chip obtains I2C data from a first device, wherein the I2C data is data sent by the first device to a second device. The first transmission chip sends first feedback information to the first device, wherein the first feedback information is used to indicate whether the I2C data is successfully received. The first transmission chip forwards the I2C data to a second transmission chip corresponding to the second device. The first transmission chip receives second feedback information from the second transmission chip, and the second feedback information is used to indicate whether the I2C data is successfully received. The first transmission chip stores the second feedback information in a first storage space that is storage space of the first transmission chip.
1. A transmission apparatus, corresponding to a first device, comprising:
a transceiver configured to:
obtain first inter-integrated circuit (I2C) data generated by the first device, wherein the first I2C data is data sent by the first device to a second device;
in response to obtaining, at the transceiver, the first I2C data generated by the first device and adhering to an I2C protocol, send first feedback information from the transceiver to the first device, wherein the first feedback information is used to indicate whether the first I2C data is successfully received;
obtain at least one second I2C data generated by the first device, wherein the at least one second I2C data is data sent by the first device to the second device;
in response to obtaining, at the transceiver, the at least one second I2C data, send another feedback information from the transceiver to the first device, wherein the another feedback information is used to indicate whether the at least one second I2C data is successfully received;
subsequent to obtaining both the first I2C data and the at least one second I2C data, forward both the first I2C data and the at least one second I2C data to a second transmission chip corresponding to the second device; and
receive second feedback information from the second transmission chip, wherein the second feedback information is used to indicate whether the first I2C data and the at least one second I2C data are successfully received at the second device; and
a processor configured to store the second feedback information in first storage space, wherein the first storage space is storage space of the transmission apparatus.
2. The transmission apparatus according to claim 1 , wherein after an amount of I2C data, comprising the first I2C data and the at least one second I2C data, is stored in a second storage space that meets a preset condition, the transceiver is configured to forward the stored I2C data to the second transmission chip, wherein the second storage space is storage space of the transmission apparatus, and the stored I2C data is from the first device.
3. The transmission apparatus according to claim 1 , wherein the transceiver is configured to receive third feedback information from the second transmission chip, wherein the third feedback information is used to indicate the second feedback information respectively corresponding to one or more pieces of I2C data comprising the first I2C data and the at least one second I2C data.
4. The transmission apparatus according to claim 2 , wherein after the transceiver receives the second feedback information from the second transmission chip, the processor is further configured to set the second storage space to a write-inhibit state.
5. The transmission apparatus according to claim 2 , wherein the transceiver is configured to read the I2C data stored in the second storage space.
6. The transmission apparatus according to claim 1 , wherein the first device is a master device and the second device is a slave device, or the first device is a slave device and the second device is a master device.
7. A transmission apparatus, corresponding to a second device, comprising:
a processor; and
a transceiver configured to:
receive inter-integrated circuit (I2C) data, comprising first I2C data and at least one second I2C data, from a first transmission chip corresponding to a first device that generated the first device via an I2C protocol, wherein the first transmission chip is enabled to send first feedback information to the first device in response to the first transmission chip receiving the first I2C data from the first device, and send another feedback information to the first device in response to the first transmission chip receiving the first I2C data from the first device;
send the first I2C data and the at least one second I2C data to the second device;
receive second feedback information from the second device, wherein the second feedback information is used to indicate whether the first I2C data and the at least one second I2C data are successfully received at the second device; and
send the second feedback information to the first transmission chip.
8. The transmission apparatus according to claim 7 , wherein the transceiver is configured to send third feedback information to the first transmission chip, wherein the third feedback information is used to indicate the second feedback information respectively corresponding to one or more pieces of I2C data comprising the first I2C data and the at least one second I2C data.
9. The transmission apparatus according to claim 8 , wherein the transceiver is configured to send the third feedback information to the first transmission chip when a preset trigger condition is met, wherein:
the preset trigger condition is that an amount of the second feedback information meets a preset condition; and/or
the preset trigger condition is that at least one piece of the I2C data fails to be received.
10. The transmission apparatus according to claim 7 , wherein the processor is configured to store the first I2C data and the at least one second I2C data from the first transmission chip in third storage space, wherein the third storage space is storage space of the transmission apparatus.
11. The transmission apparatus according to claim 7 , wherein the first device is a master device and the second device is a slave device, or the first device is a slave device and the second device is a master device.
12. A communications apparatus, comprising:
a processor; and
a transceiver configured to:
send first inter-integrated circuit (I2C) data via an I2C protocol to a first transmission chip corresponding to the communications apparatus;
receive first feedback information from the first transmission chip, wherein the first feedback information is used to indicate whether the first I2C data is successfully received, and wherein the first transmission chip is enabled to send the first feedback information in response to receiving the first I2C data;
send at least one second I2C data via the I2C protocol to the first transmission chip corresponding to the communications apparatus;
receive another feedback information from the first transmission chip, wherein the another feedback information is used to indicate whether the at least one second I2C data is successfully received, and wherein the first transmission chip is enabled to send the another feedback information in response to receiving the at least one second I2C data; and
read first storage space corresponding to the first transmission chip to obtain second feedback information, wherein the second feedback information is used to indicate whether the first I2C data and the at least one second I2C data are successfully received at a second communications apparatus.
13. The communications apparatus according to claim 12 , wherein the transceiver is configured to periodically read the first storage space.
14. The communications apparatus according to claim 12 , wherein the processor is configured to determine that second storage space corresponding to the first transmission chip is in a write-inhibit state.
15. The communications apparatus according to claim 12 , wherein after an amount of I2C data, comprising the first I2C data and the at least one second I2C data, is stored in a second storage space that meets a preset condition, the transceiver is configured to forward the stored I2C data to the second communications apparatus, wherein the second storage space is storage space of the transceiver.
16. The communications apparatus according to claim 12 , wherein the transceiver is configured to receive third feedback information from the second communications apparatus, wherein the third feedback information is used to indicate the second feedback information respectively corresponding to one or more pieces of I2C data comprising the first I2C data and the at least one second I2C data.