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modbus_tcp

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remove comments that bring no extra meaning to the code
This commit is contained in:
Sander Speetjens
2023-11-28 12:45:05 +01:00
parent 349fb1f9a5
commit 24226b38cd
1 changed files with 28 additions and 19 deletions
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47
project/Core/Src/modbus_tcp.c
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@@ -54,7 +54,8 @@ static err_t modbus_incoming_data(void* arg, struct tcp_pcb* pcb, struct pbuf* p
uint32_t result_background = 0;
uint32_t text_foreground_color = 0;
memset(text, '_', TEXT_LENGTH); // Putting underscores in the whole array
// Putting underscores in the whole array
memset(text, '_', TEXT_LENGTH);
text[TEXT_LENGTH - 1] = '\0';
if (p != NULL) {
@@ -70,13 +71,13 @@ static err_t modbus_incoming_data(void* arg, struct tcp_pcb* pcb, struct pbuf* p
if (registers[MODBUS_MODE] == MULTIPLE_REG) {
// Check if it's a Modbus Write Multiple Registers request (0x10)
LOG_INFO(TAG, "in writing multiple register mode\n");
background_red = registers[REG_01]; // 01
background_green = registers[REG_02]; // 02
background_blue = registers[REG_03]; // 03
text_color_red = registers[REG_04]; // 04
text_color_green = registers[REG_05]; // 05
text_color_blue = registers[REG_06]; // 06
nr_img = registers[REG_07]; // 07
background_red = registers[REG_01];
background_green = registers[REG_02];
background_blue = registers[REG_03];
text_color_red = registers[REG_04];
text_color_green = registers[REG_05];
text_color_blue = registers[REG_06];
nr_img = registers[REG_07];
LOG_INFO(TAG, "%d %d %d %d %d %d %d", background_red, background_green, background_blue, text_color_red,
text_color_green, text_color_blue, nr_img);
@@ -103,8 +104,8 @@ static err_t modbus_incoming_data(void* arg, struct tcp_pcb* pcb, struct pbuf* p
size_t number_of_files = llfs_file_count(); // How many files that there are
if (number_of_files > 0) {
llfs_file_t file_list[number_of_files]; // Reserving memory for the list
number_of_files = llfs_file_list(file_list, number_of_files, NULL); // Freed memory filled with the list
llfs_file_t file_list[number_of_files];
number_of_files = llfs_file_list(file_list, number_of_files, NULL);
if (number_of_files < nr_img) {
lcd_clear_text();
@@ -112,7 +113,7 @@ static err_t modbus_incoming_data(void* arg, struct tcp_pcb* pcb, struct pbuf* p
lcd_stop_all_gifs();
lcd_display_text(text, 10, 10, text_foreground_color, result_background,
LCD_FONT24); // When no image
LCD_FONT24);
lcd_display_text("FILE NOT IN FILESYSTEM", 10, 75, LCD_RED, LCD_BLACK, LCD_FONT24);
} else {
@@ -151,10 +152,14 @@ static err_t modbus_incoming_data(void* arg, struct tcp_pcb* pcb, struct pbuf* p
* @brief Sets the function that's being called when theirs incoming data
*/
static err_t modbus_accept(void* arg, struct tcp_pcb* pcb, err_t err) {
LWIP_UNUSED_ARG(arg); // Eliminates compiler warning about unused arguments
LWIP_UNUSED_ARG(err); // Eliminates compiler warning about unused arguments
tcp_setprio(pcb, TCP_PRIO_MIN); // Sets the priority of a connection.
tcp_recv(pcb, modbus_incoming_data); // Sets which function is being called when new data arrives
LWIP_UNUSED_ARG(arg);
LWIP_UNUSED_ARG(err);
// Sets the priority of a connection.
tcp_setprio(pcb, TCP_PRIO_MIN);
// Sets which function is being called when new data arrives
tcp_recv(pcb, modbus_incoming_data);
return ERR_OK;
}
@@ -165,10 +170,14 @@ static err_t modbus_accept(void* arg, struct tcp_pcb* pcb, err_t err) {
*/
void modbus_init(void) {
LOG_INFO(TAG, "Initializing\n");
modbus_pcb = tcp_new(); // Creating a new tcp pcb
tcp_bind(modbus_pcb, IP_ADDR_ANY, MODBUSPORT); // Bind the modbus_pcb to port 502
// Creating a new tcp pcb
modbus_pcb = tcp_new();
modbus_pcb = tcp_listen(modbus_pcb); // Listen
tcp_accept(modbus_pcb, modbus_accept); // Set callback function
// Bind the modbus_pcb to port 502
tcp_bind(modbus_pcb, IP_ADDR_ANY, MODBUSPORT);
modbus_pcb = tcp_listen(modbus_pcb);
// Set callback function for incoming connections
tcp_accept(modbus_pcb, modbus_accept);
LOG_INFO(TAG, "initialized\n");
}