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authorMeco Man <[email protected]>2023-02-05 18:35:33 -0500
committerMan, Jianting (Meco) <[email protected]>2023-02-07 21:43:57 -0500
commitf58d3c5200d5a51a39503c5311422e2fb99d3d20 (patch)
treecab3ae78ea13bfb649e5087c138bf9a951746a4b /include/rtthread.h
parent890c1c9264e425f20c2925de4095fb46ca4e74aa (diff)
rt_device_write/read return data type as rt_ssize_t
rt_ssize_t can give negative error code, which follows the unix style correctly
Diffstat (limited to 'include/rtthread.h')
-rw-r--r--include/rtthread.h4
1 files changed, 2 insertions, 2 deletions
diff --git a/include/rtthread.h b/include/rtthread.h
index 7538a3c032..5cfa3c26b1 100644
--- a/include/rtthread.h
+++ b/include/rtthread.h
@@ -560,11 +560,11 @@ rt_device_set_tx_complete(rt_device_t dev,
rt_err_t rt_device_init (rt_device_t dev);
rt_err_t rt_device_open (rt_device_t dev, rt_uint16_t oflag);
rt_err_t rt_device_close(rt_device_t dev);
-rt_size_t rt_device_read (rt_device_t dev,
+rt_ssize_t rt_device_read(rt_device_t dev,
rt_off_t pos,
void *buffer,
rt_size_t size);
-rt_size_t rt_device_write(rt_device_t dev,
+rt_ssize_t rt_device_write(rt_device_t dev,
rt_off_t pos,
const void *buffer,
rt_size_t size);