esp32,esp8266: Remove dead code for end_ticks in machine_bitstream.

jimmo · dpgeorge · commit 996f703166d8 · 2021-08-24T23:55:08.000+10:00
The compiler was optimising this out already so it's a no-op change.

Signed-off-by: Jim Mussared &lt;jim.mussared@gmail.com&gt;
diff --git a/ports/esp32/machine_bitstream.c b/ports/esp32/machine_bitstream.c
@@ -69,13 +69,11 @@ void IRAM_ATTR machine_bitstream_high_low(mp_hal_pin_obj_t pin, uint32_t *timing
             GPIO_REG_WRITE(gpio_reg_set, pin_mask);
             uint32_t start_ticks = mp_hal_ticks_cpu();
             uint32_t *t = &timing_ns[b >> 6 & 2];
-            uint32_t end_ticks = start_ticks + t[0];
             while (mp_hal_ticks_cpu() - start_ticks < t[0]) {
                 ;
             }
             GPIO_REG_WRITE(gpio_reg_clear, pin_mask);
             b <<= 1;
-            end_ticks += t[1];
             while (mp_hal_ticks_cpu() - start_ticks < t[1]) {
                 ;
             }
diff --git a/ports/esp8266/machine_bitstream.c b/ports/esp8266/machine_bitstream.c
@@ -57,13 +57,11 @@ void machine_bitstream_high_low(mp_hal_pin_obj_t pin, uint32_t *timing_ns, const
             GPIO_REG_WRITE(GPIO_OUT_W1TS_ADDRESS, pin_mask);
             uint32_t start_ticks = mp_hal_ticks_cpu();
             uint32_t *t = &timing_ns[b >> 6 & 2];
-            uint32_t end_ticks = start_ticks + t[0];
             while (mp_hal_ticks_cpu() - start_ticks < t[0]) {
                 ;
             }
             GPIO_REG_WRITE(GPIO_OUT_W1TC_ADDRESS, pin_mask);
             b <<= 1;
-            end_ticks += t[1];
             while (mp_hal_ticks_cpu() - start_ticks < t[1]) {
                 ;
             }

Original file line number	Diff line number	Diff line change
`@@ -69,13 +69,11 @@ void IRAM_ATTR machine_bitstream_high_low(mp_hal_pin_obj_t pin, uint32_t *timing`
`69`	`69`	`GPIO_REG_WRITE(gpio_reg_set, pin_mask);`
`70`	`70`	`uint32_t start_ticks = mp_hal_ticks_cpu();`
`71`	`71`	`uint32_t *t = &timing_ns[b >> 6 & 2];`
`72`		`- uint32_t end_ticks = start_ticks + t[0];`
`73`	`72`	`while (mp_hal_ticks_cpu() - start_ticks < t[0]) {`
`74`	`73`	`;`
`75`	`74`	`}`
`76`	`75`	`GPIO_REG_WRITE(gpio_reg_clear, pin_mask);`
`77`	`76`	`b <<= 1;`
`78`		`- end_ticks += t[1];`
`79`	`77`	`while (mp_hal_ticks_cpu() - start_ticks < t[1]) {`
`80`	`78`	`;`
`81`	`79`	`}`
Original file line number	Diff line number	Diff line change
`@@ -57,13 +57,11 @@ void machine_bitstream_high_low(mp_hal_pin_obj_t pin, uint32_t *timing_ns, const`
`57`	`57`	`GPIO_REG_WRITE(GPIO_OUT_W1TS_ADDRESS, pin_mask);`
`58`	`58`	`uint32_t start_ticks = mp_hal_ticks_cpu();`
`59`	`59`	`uint32_t *t = &timing_ns[b >> 6 & 2];`
`60`		`- uint32_t end_ticks = start_ticks + t[0];`
`61`	`60`	`while (mp_hal_ticks_cpu() - start_ticks < t[0]) {`
`62`	`61`	`;`
`63`	`62`	`}`
`64`	`63`	`GPIO_REG_WRITE(GPIO_OUT_W1TC_ADDRESS, pin_mask);`
`65`	`64`	`b <<= 1;`
`66`		`- end_ticks += t[1];`
`67`	`65`	`while (mp_hal_ticks_cpu() - start_ticks < t[1]) {`
`68`	`66`	`;`
`69`	`67`	`}`