Fix issues

Author: peterharperuk

README.md

@@ -170,8 +170,8 @@ App|Description
 ---|---
 [picow_access_point](pico_w/wifi/access_point) | Starts a WiFi access point, and fields DHCP requests.
 [picow_blink](pico_w/wifi/blink) | Blinks the on-board LED (which is connected via the WiFi chip).
-[picow_blink_slow_clock](pico_w/wifi/blink_slow_clock) | Blinks the on-board LED (which is connected via the WiFi chip) with a slower system clock to show how to reconfigure communication with the WiFi chip under those circumstances
-[picow_blink_fast_clock](pico_w/wifi/blink_slow_clock) | Blinks the on-board LED (which is connected via the WiFi chip) with a faster system clock to show how to reconfigure communication with the WiFi chip under those circumstances
+[picow_blink_slow_clock](pico_w/wifi/blink) | Blinks the on-board LED (which is connected via the WiFi chip) with a slower system clock to show how to reconfigure communication with the WiFi chip at run time under those circumstances
+[picow_blink_fast_clock](pico_w/wifi/blink) | Blinks the on-board LED (which is connected via the WiFi chip) with a faster system clock to show how to reconfigure communication with the WiFi chip at build time under those circumstances
 [picow_iperf_server](pico_w/wifi/iperf) | Runs an "iperf" server for WiFi speed testing.
 [picow_ntp_client](pico_w/wifi/ntp_client) | Connects to an NTP server to fetch and display the current time.
 [picow_tcp_client](pico_w/wifi/tcp_client) | A simple TCP client. You can run [python_test_tcp_server.py](pico_w/wifi/python_test_tcp/python_test_tcp_server.py) for it to connect to.

pico_w/wifi/blink/CMakeLists.txt

@@ -12,7 +12,7 @@ pico_add_extra_outputs(picow_blink)
 # add url via pico_set_program_url
 example_auto_set_url(picow_blink)
 
-# This version should behave exactly the same, but it runs the sys clock slowly.
+# This version should behave exactly the same, but it runs the sys clock slower and changes the pio pio clock divisor for the cyw43 driver at run time.
 add_executable(picow_blink_slow_clock
         picow_blink_slow_clock.c
         )
@@ -32,7 +32,7 @@ pico_add_extra_outputs(picow_blink_slow_clock)
 # add url via pico_set_program_url
 example_auto_set_url(picow_blink_slow_clock)
 
-# This version should behave exactly the same, but it runs the sys clock slowly.
+# This version should behave exactly the same, but it runs the sys clock faster and changes the pio pio clock divisor for the cyw43 driver at build time.
 add_executable(picow_blink_fast_clock
         picow_blink_fast_clock.c
         )
@@ -44,7 +44,7 @@ target_link_libraries(picow_blink_fast_clock
 # This requires us to modify the pio divisor to successfully communicate with the cyw43 chip
 target_compile_definitions(picow_blink_fast_clock PRIVATE
         CYW43_PIO_CLOCK_DIV_INT=4
-        CYW43_PIO_CLOCK_DIV_FRAC=0
+        CYW43_PIO_CLOCK_DIV_FRAC8=0
         )
 
 # create map/bin/hex file etc.