stm32f1: Add detection by part IDs for AT32F421

blackmagic-debug · Nov 9, 2024 · a274cc2 · a274cc2
1 parent dd9dca1
commit a274cc2
Showing 1 changed file with 61 additions and 0 deletions.
diff --git a/src/target/stm32f1.c b/src/target/stm32f1.c
@@ -141,6 +141,8 @@
 #define AT32F4x_IDCODE_PART_MASK   0x00000fffU
 #define AT32F41_SERIES             0x70030000U
 #define AT32F40_SERIES             0x70050000U
+#define AT32F421_SERIES_16KB       0x50010000U
+#define AT32F421_SERIES            0x50020000U
 #define AT32F4x_PROJECT_ID         0x1ffff7f3U
 
 #define STM32F1_OB_COUNT 8U
@@ -557,6 +559,58 @@ static bool at32f413_detect(target_s *target, const uint16_t part_id)
 	return stm32f1_configure_dbgmcu(target, STM32F1_DBGMCU_CONFIG);
 }
 
+static bool at32f421_detect(target_s *target, const uint16_t part_id)
+{
+	// Extra part: AT32F4212C8T7 with dual Op-Amp? (16/64, LQFP48)
+	switch (part_id) {
+	case 0x0100U: // AT32F421C8T7 / LQFP48
+	case 0x0101U: // AT32F421K8T7 / LQFP32
+	case 0x0102U: // AT32F421K8U7 / QFN32_5x5
+	case 0x0103U: // AT32F421K8U7-4 / QFN32_4x4
+	case 0x0104U: // AT32F421F8U7 / QFN20
+	case 0x0105U: // AT32F421F8P7 / TSSOP20
+	case 0x0112U: // AT32F421G8U7 / QFN28
+	case 0x0115U: // AT32F421PF8P7 / TSSOP20 (AN0016)
+		// Flash (8): 64 KiB / 1 KiB per block
+		stm32f1_add_flash(target, 0x08000000, 64U * 1024U, 1U * 1024U);
+		target_add_ram32(target, 0x20000000, 16U * 1024U);
+		break;
+	case 0x0086U: // LQFP48
+	case 0x0087U: // LQFP32
+	case 0x0088U: // QFN32_5x5
+	case 0x0089U: // QFN32_4x4
+	case 0x008aU: // QFN20
+	case 0x008bU: // TSSOP20
+	case 0x0093U: // QFN28
+		// Flash (6): 32 KiB / 1 KiB per block
+		stm32f1_add_flash(target, 0x08000000, 32U * 1024U, 1U * 1024U);
+		target_add_ram32(target, 0x20000000, 16U * 1024U);
+		break;
+	case 0x000cU: // LQFP48
+	case 0x000dU: // LQFP32
+	case 0x000eU: // QFN32_5x5
+	case 0x000fU: // QFN32_4x4
+	case 0x0010U: // QFN20
+	case 0x0011U: // AT32F421F4P7 / TSSOP20
+	case 0x0014U: // QFN28
+	case 0x0016U: // AT32F421PF4P7 / TSSOP20 (AN0016)
+		// Flash (4): 16 KiB / 1 KiB per block
+		stm32f1_add_flash(target, 0x08000000, 16U * 1024U, 1U * 1024U);
+		target_add_ram32(target, 0x20000000, 8U * 1024U);
+		break;
+	// Unknown/undocumented
+	default:
+		return false;
+	}
+
+	target->driver = "AT32F421";
+	target->part_id = part_id;
+	target->target_options |= STM32F1_TOPT_32BIT_WRITES;
+	target->mass_erase = stm32f1_mass_erase;
+	// TODO: AT32F421 have 512 bytes of User System Data
+	return stm32f1_configure_dbgmcu(target, STM32F1_DBGMCU_CONFIG);
+}
+
 /* Identify AT32F40x "Mainstream" line devices (Cortex-M4) */
 bool at32f40x_probe(target_s *target)
 {
@@ -595,6 +649,13 @@ bool at32f40x_probe(target_s *target)
 		if (project_id == 0xffU)
 			return false;
 	}
+	/* Value line. 0x09: F421 (Basic) */
+	if (series == AT32F421_SERIES || series == AT32F421_SERIES_16KB) {
+		if (project_id == 9U)
+			return at32f421_detect(target, part_id);
+		if (project_id == 0xffU)
+			return false;
+	}
 
 	return false;
 }