Initial pushmain

1 files changed, 39 insertions, 0 deletions

diff --git a/firmware/s1224/include/board_pins.h b/firmware/s1224/include/board_pins.h
new file mode 100644
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+++ b/firmware/s1224/include/board_pins.h
@@ -0,0 +1,39 @@
+/**
+ * T-Modem-s1224 pin map — softmodem service Pico (same PCB base as c1224).
+ * No TCM3105: PWM AF out bypasses chip socket (prototype jumper to AF path).
+ * SPDX-License-Identifier: GPL-3.0-or-later
+ */
+#ifndef S1224_BOARD_PINS_H
+#define S1224_BOARD_PINS_H
+
+#include <stdint.h>
+#include <stdbool.h>
+
+#define S1224_HAS_CHIP_MODEM  0
+
+/* I2C LCD (shared-kit class; level-shifted on board) */
+#define PIN_I2C_SDA           0
+#define PIN_I2C_SCL           1
+#define I2C_LCD_BAUDRATE      100000
+#define I2C_LCD_ADDR_DEFAULT  0x27
+
+/* GP6 · PCB net AF_TX · PWM AFSK out */
+#define PIN_AF_TX             6
+
+/* GP26 · PCB net AF_RX when routed · ADC channel 0 */
+#define PIN_AF_RX_ADC         26
+
+/* GP7/GP8 · NC on s1224 PCB · optional FW sense if wired */
+#define PIN_GP7_SENSE         7
+#define PIN_MODEM_RXD         PIN_GP7_SENSE  /* alias · was chip RXD name */
+#define PIN_MODEM_CDT         8  /* unused · NC on board */
+
+#define PIN_PTT_DRV           9  /* GP9 · PTT keying */
+
+#define PIN_LED_PTT           10
+#define PIN_LED_DCD           11
+#define PIN_LED_TXRX          12
+
+void board_pins_init(void);
+
+#endif /* S1224_BOARD_PINS_H */