Working communication.

CMakeLists.txt

@@ -30,11 +30,23 @@ add_subdirectory(lib/Pico_I2C)
 target_link_libraries(Pico_Master
   pico_stdlib
   Pico_I2C
+  pico_cyw43_arch_lwip_poll
 )
 
 target_link_libraries(Pico_Slave
   pico_stdlib
   Pico_I2C
+  pico_cyw43_arch_lwip_poll
+)
+
+# Includes
+target_include_directories(Pico_Master PUBLIC
+    ${CMAKE_CURRENT_LIST_DIR}/src/.
+)
+
+# Includes
+target_include_directories(Pico_Slave PUBLIC
+    ${CMAKE_CURRENT_LIST_DIR}/src/.
 )
 
 # Stdio configuration

README.md

@@ -1,3 +1,3 @@
-# PicoW_UDP_Tests
+# Pico_I2C_Tests
 
-Test of the library PicoW_UDP_Lib.
+Test of the library Pico_I2C_Lib.

lib/Pico_I2C

@@ -1 +1 @@
-Subproject commit 2ec3b6816b2c863b03d3dceb4bb247dd48781ec5
+Subproject commit 6013565e66cf5523d59cbbbac05785218da88ee3

src/lwipopts.h

@@ -0,0 +1,92 @@
+#ifndef _LWIPOPTS_EXAMPLE_COMMONH_H
+#define _LWIPOPTS_EXAMPLE_COMMONH_H
+
+
+// Common settings used in most of the pico_w examples
+// (see https://www.nongnu.org/lwip/2_1_x/group__lwip__opts.html for details)
+
+// allow override in some examples
+#ifndef NO_SYS
+#define NO_SYS                      1
+#endif
+// allow override in some examples
+#ifndef LWIP_SOCKET
+#define LWIP_SOCKET                 0
+#endif
+#if PICO_CYW43_ARCH_POLL
+#define MEM_LIBC_MALLOC             1
+#else
+// MEM_LIBC_MALLOC is incompatible with non polling versions
+#define MEM_LIBC_MALLOC             0
+#endif
+#define MEM_ALIGNMENT               4
+#ifndef MEM_SIZE
+#define MEM_SIZE                    4000
+#endif
+#define MEMP_NUM_TCP_SEG            32
+#define MEMP_NUM_ARP_QUEUE          10
+#define PBUF_POOL_SIZE              24
+#define LWIP_ARP                    1
+#define LWIP_ETHERNET               1
+#define LWIP_ICMP                   1
+#define LWIP_RAW                    1
+#define TCP_WND                     (8 * TCP_MSS)
+#define TCP_MSS                     1460
+#define TCP_SND_BUF                 (8 * TCP_MSS)
+#define TCP_SND_QUEUELEN            ((4 * (TCP_SND_BUF) + (TCP_MSS - 1)) / (TCP_MSS))
+#define LWIP_NETIF_STATUS_CALLBACK  1
+#define LWIP_NETIF_LINK_CALLBACK    1
+#define LWIP_NETIF_HOSTNAME         1
+#define LWIP_NETCONN                0
+#define MEM_STATS                   0
+#define SYS_STATS                   0
+#define MEMP_STATS                  0
+#define LINK_STATS                  0
+// #define ETH_PAD_SIZE                2
+#define LWIP_CHKSUM_ALGORITHM       3
+#define LWIP_DHCP                   1
+#define LWIP_IPV4                   1
+#define LWIP_TCP                    1
+#define LWIP_UDP                    1
+#define LWIP_DNS                    1
+#define LWIP_TCP_KEEPALIVE          1
+#define LWIP_NETIF_TX_SINGLE_PBUF   1
+#define DHCP_DOES_ARP_CHECK         0
+#define LWIP_DHCP_DOES_ACD_CHECK    0
+
+#ifndef NDEBUG
+#define LWIP_DEBUG                  1
+#define LWIP_STATS                  1
+#define LWIP_STATS_DISPLAY          1
+#endif
+
+#define ETHARP_DEBUG                LWIP_DBG_OFF
+#define NETIF_DEBUG                 LWIP_DBG_OFF
+#define PBUF_DEBUG                  LWIP_DBG_OFF
+#define API_LIB_DEBUG               LWIP_DBG_OFF
+#define API_MSG_DEBUG               LWIP_DBG_OFF
+#define SOCKETS_DEBUG               LWIP_DBG_OFF
+#define ICMP_DEBUG                  LWIP_DBG_OFF
+#define INET_DEBUG                  LWIP_DBG_OFF
+#define IP_DEBUG                    LWIP_DBG_OFF
+#define IP_REASS_DEBUG              LWIP_DBG_OFF
+#define RAW_DEBUG                   LWIP_DBG_OFF
+#define MEM_DEBUG                   LWIP_DBG_OFF
+#define MEMP_DEBUG                  LWIP_DBG_OFF
+#define SYS_DEBUG                   LWIP_DBG_OFF
+#define TCP_DEBUG                   LWIP_DBG_OFF
+#define TCP_INPUT_DEBUG             LWIP_DBG_OFF
+#define TCP_OUTPUT_DEBUG            LWIP_DBG_OFF
+#define TCP_RTO_DEBUG               LWIP_DBG_OFF
+#define TCP_CWND_DEBUG              LWIP_DBG_OFF
+#define TCP_WND_DEBUG               LWIP_DBG_OFF
+#define TCP_FR_DEBUG                LWIP_DBG_OFF
+#define TCP_QLEN_DEBUG              LWIP_DBG_OFF
+#define TCP_RST_DEBUG               LWIP_DBG_OFF
+#define UDP_DEBUG                   LWIP_DBG_OFF
+#define TCPIP_DEBUG                 LWIP_DBG_OFF
+#define PPP_DEBUG                   LWIP_DBG_OFF
+#define SLIP_DEBUG                  LWIP_DBG_OFF
+#define DHCP_DEBUG                  LWIP_DBG_OFF
+
+#endif /* __LWIPOPTS_H__ */

src/main_master.c

@@ -10,6 +10,10 @@ int main(void)
 
     cyw43_arch_gpio_put(CYW43_WL_GPIO_LED_PIN, true);
 
+    i2c_master_t i2c_master;
+
+    init_i2c_master(&i2c_master, i2c0);
+
     for(int i = 0; i < 3; i++)
     {
         cyw43_arch_gpio_put(CYW43_WL_GPIO_LED_PIN, false);
@@ -30,11 +34,20 @@ int main(void)
             led_state = !led_state;
 
             cyw43_arch_gpio_put(CYW43_WL_GPIO_LED_PIN, led_state);
+
+            uint8_t data[2] = {0x00, led_state};
+            int ret = i2c_write_blocking(i2c_master.i2c_inst, 0x09, data, sizeof(data), false);
+            if(ret != sizeof(data))
+            {
+                printf("Error sending data : %d\n", ret);
+            }
         }
 
         tight_loop_contents();
     }
 
+    exit_i2c_master(&i2c_master);
+
     cyw43_arch_deinit();
 
     return PICO_OK;

src/main_slave.c

@@ -10,8 +10,22 @@ int main(void)
 
     cyw43_arch_gpio_put(CYW43_WL_GPIO_LED_PIN, true);
 
+    i2c_slave_t i2c_slave;
+
+    init_i2c_slave(&i2c_slave, i2c0, 0x09);
+
+    for(int i = 0; i < 3; i++)
+    {
+        cyw43_arch_gpio_put(CYW43_WL_GPIO_LED_PIN, false);
+        sleep_ms(100);
+        cyw43_arch_gpio_put(CYW43_WL_GPIO_LED_PIN, true);
+        sleep_ms(100);
+    }
+
     while(true)
     {
+        cyw43_arch_gpio_put(CYW43_WL_GPIO_LED_PIN, i2c_slave.buffer[0]);
+
         tight_loop_contents();
     }