add display driver

.gitmodules

@@ -0,0 +1,3 @@
+[submodule "Pico-GC9A01"]
+	path = Pico-GC9A01
+	url = https://github.com/dorsic/Pico-GC9A01.git

CMakeLists.txt

@@ -27,10 +27,15 @@ set(PICO_CXX_ENABLE_EXCEPTIONS 1)
 # Initialise the Raspberry Pi Pico SDK
 pico_sdk_init()
 
+file(GLOB GC9A01_SOURCES
+        "Pico-GC9A01/GC9A01/*.c"
+)
 # Add executable. Default name is the project name, version 0.1
 
 add_executable(smart_alarm smart_alarm.cpp
-        net_utils.cpp timezones.cpp)
+        net_utils.cpp timezones.cpp
+        display.cpp
+        ${GC9A01_SOURCES})
 
 pico_set_program_name(smart_alarm "smart_alarm")
 pico_set_program_version(smart_alarm "0.2")
@@ -46,7 +51,7 @@ target_link_libraries(smart_alarm
 target_include_directories(smart_alarm PRIVATE
   ${CMAKE_CURRENT_LIST_DIR}
   ${CMAKE_CURRENT_LIST_DIR}/.. # for our common lwipopts or any other standard includes, if required
-  ${CMAKE_CURRENT_LIST_DIR}/json/include
+  ${CMAKE_CURRENT_LIST_DIR}/Pico-GC9A01/GC9A01
 )
 
 # Add any user requested libraries

Pico-GC9A01

@@ -0,0 +1 @@
+Subproject commit 7337ef8f51f1580cf884af2a96e2c93752431bc7

display.cpp

@@ -0,0 +1,5 @@
+#include "spi.h"
+#include "pico/time.h"
+
+// GC9A01
+

smart_alarm.cpp

@@ -1,7 +1,6 @@
 #include "hardware/clocks.h"
 #include "hardware/rtc.h"
 #include "hardware/spi.h"
-#include "hardware/timer.h"
 #include "lwip/apps/sntp.h"
 #include "lwip/err.h"
 #include "lwip/ip_addr.h"
@@ -14,22 +13,11 @@
 #include <stdio.h>
 
 #include "lwip/dns.h"
-#include "lwip/init.h"
 #include "lwip/tcp.h"
 #include "net_utils.h"
 #include "timezones.h"
+#include "spi.h"
 
-// SPI Defines
-// We are going to use SPI 0, and allocate it to the following GPIO pins
-// Pins can be changed, see the GPIO function select table in the datasheet for
-// information on GPIO assignments
-#define SPI_PORT spi0
-#define PIN_MISO 16
-#define PIN_CS 17
-#define PIN_SCK 18
-#define PIN_MOSI 19
-#define PIN_DC   16
-#define PIN_RST  20
 
 #define NTP_DELTA 2208988800UL
 
@@ -106,8 +94,8 @@ int main() {
   // sign of life
   cyw43_arch_gpio_put(CYW43_WL_GPIO_LED_PIN, true);
 
-  // SPI initialisation. This example will use SPI at 1MHz.
-  spi_init(SPI_PORT, 1000 * 1000);
+  // SPI initialisation.
+  spi_init(SPI_PORT, SPI_CLOCK_HZ);
   gpio_set_function(PIN_MISO, GPIO_FUNC_SPI);
   gpio_set_function(PIN_CS, GPIO_FUNC_SIO);
   gpio_set_function(PIN_SCK, GPIO_FUNC_SPI);

spi.h

@@ -0,0 +1,17 @@
+#ifndef SMART_ALARM_SPI_H
+#define SMART_ALARM_SPI_H
+
+// SPI Defines
+// We are going to use SPI 0, and allocate it to the following GPIO pins
+// Pins can be changed, see the GPIO function select table in the datasheet for
+// information on GPIO assignments
+#define SPI_PORT spi0
+#define PIN_MISO 16
+#define PIN_CS 17
+#define PIN_SCK 18
+#define PIN_MOSI 19
+#define PIN_DC   16
+#define PIN_RST  20
+
+#define SPI_CLOCK_HZ 12000000
+#endif //SMART_ALARM_SPI_H